The design of mechanical and automatic transmissions is constantly being improved. Each of these constructive types transmission has both advantages and disadvantages. The main disadvantage of a classic automatic transmission is the release of power when shifting gears. That is why many automakers have developed and are developing modernized automatic transmissions that allow you to change gear without breaking power.

Audi S-Tronic gearbox

The design idea of ​​such a preselective transmission is extremely simple. The principle of operation of a manual gearbox with two shafts was taken. In fact, such a gearbox has two clutches that allow you to switch gears without breaking power. This allows not only to improve dynamic performance, fuel consumption is significantly reduced and improves the safety of the car when performing high-speed maneuvers and overtaking. Currently on Audi cars a seven-speed robotic preselective box is standard installed s-tronic transmission. This transmission has established itself as a fairly reliable and high-tech gearbox, which provides maximum comfort driving.

5 main faults S-Tronic (DSG7 dry) - video

One of the benefits of using these preselective seven-speed s-tronic automatic transmissions is compact dimensions transmission. This makes it easy to use preselective gearboxes on compact cars that have limited engine compartment space. In this case, it is difficult to install a full-fledged six- or seven-speed gearbox in such a limited engine compartment. The use of the s-tronic preselective machine in this case has become the best solution to the problem of small cars. Now small city cars from Audi have received the possibility of using multi-speed automatic transmissions that optimally implement dynamic potential power unit and save fuel.

The design of the S-Tronik box

How does S-Tronic work?

By its design, such a preselective s-tronic gearbox is closer to mechanical transmissions, which are equipped with a special device for fully automatic gear shifting. There are special paddle shifters for manual gear changes. In this case, switching takes place in a fraction of a second, and power is not interrupted due to the presence of two clutches. It is possible to activate completely automatic operation operating mode, when the electronics independently decides on a gear change. Audi's seven-speed s-tronic gearbox has a fully computerized control that monitors the parameters of the transmission. If there are any malfunctions in the operation of the automatic transmission, a corresponding warning is displayed. This not only increases the ease of use of the transmission, but also simplifies the subsequent one. With the help of special diagnostic equipment, the service technician can easily determine the existing breakdown and eliminate it in a short time.

The box allows you to reduce the lack of understeer of the car by compressing the clutch packs in the right turn, and in the left turn there is a hydraulic lock, and as a result right wheel gets more torque

Reliability S-Tronic from Audi

At the same time, car owners need to take into account the fact that the S-tronic audi automatic transmission is not without flaws. First of all, such disadvantages include a significant complication of the design. It was possible to achieve the smoothest possible switching without breaking the power by using additional shafts and clutches. As a result, there are more moving parts inside the transmission, which, despite the use of sufficiently strong materials, are prone to breakage. In addition, car owners must take into account the fact that preselective boxes, which include s-tronic, require qualified maintenance. It is necessary to regularly change the oil in the transmission, which is carried out with a run of 40 - 50 thousand kilometers. The desire of the car owner to save on carrying out service work inevitably leads to breakdowns of the clutches and problems with the solenoids. Oil in s-tronic must be used exclusively original.

Structurally, this gearbox has a slightly different design than classic automatic gearboxes. For this reason, many experts in service centers simply refuse to service and repair the s-tronic automatic transmission. All of this makes it a bit more difficult to do. repair work and preselective automatic transmission service.

Increasingly popular among motorists. If abroad the concept of "variator" does not raise questions, then domestic motorists not used to cars with this kind of gearbox. Therefore, now we will tell you what the variator is on the Audi A4 - you can also evaluate the reviews of other motorists in this article.

The main advantage of a variable speed gearbox (hereinafter referred to as CVT) is the ability to efficiently use motor power, compared to other types of gearboxes. Russian and Ukrainian motorists often switch to cars with CVT, fuel economy, lack of jerks when driving and other factors provide a high level of comfort.

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What type is on A4 and A6?

As mentioned above, the popularity of CVTs is growing, vehicle manufacturers are more often installing CVTs of their own production on cars. So, on cars "Audi A4" "Audi A6" the manufacturer puts variators "Multitronic". This type The gearbox is a continuously variable gearbox.

CVT Multitronic consists of:

• multi-plate "wet" clutch;
• planetary box device;
• intermediate transmission component;
• directly variable speed transmission;
• main speed;
• differential;
• gearbox housing.

This type of CVT is V-belt, and we note that Audi was the first to use a metal chain in their gearboxes. This engineering solution made it possible to increase the range gear ratios. As a result of the use of links of different sizes, in the CVT, a reduction in the noise of the gearbox as a whole was achieved.


According to the manufacturer, the operation of this type of gearbox allows for maximum dynamism when driving a vehicle, a high level of fuel economy by the engine. What can we say about comfort. The consumer properties of these CVTs are quite high, and they are put on the premium class cars "Audi A4" and "Audi A6". On these modes of transport, the manufacturer installs the CVT model "Miltitronic 01J".

Is this variator subject to repair and where to carry it out?

Not everything can be perfect, as we would like. As they say, "there is always a fly in the ointment in a barrel of honey." We are talking about an electronic unit - its location in the CVT unit has one huge drawback. When the CVT is operating, heavy loads are placed on the block. This is due to the heating of the transmission fluid. Therefore, the electronics unit often fails.

In some cases, even 80 thousand kilometers for a block can be “lethal”. If you contact the manufacturer with such a problem, he will say one thing: "the electronic unit needs to be replaced." You will lose not only a lot of time, since such a device is usually out of stock and ordered from abroad, but also a lot of money. But, if the car is still under warranty, then the dealer can change the electronic unit is free.

This type of failure is the most common, it can be called a disease for Multitronic CVTs. The metal chain breaks less often. But even in this case, the official dealer will not carry out repairs, but will offer the car owner to replace.

You can contact specialized service stations that repair control units. Diagnostics on the computer shows a list of errors when the unit fails:

• 17105 P0721 or 17106 P0722 - the output speed device has failed - in this case, the block signal is incorrect or completely absent;
• 17114 P0730 wrong gear ratio block;
• 17134 P0750 - the ABS / EDS device has failed;
• 17137 P0753 - no electrical circuit signal;
• 18201 P1793 or 18206 P1798 - the device for the number of output revolutions has failed - in the event of such a breakdown, the signal is incorrect or completely absent;
• 17090 P0706 - the controller position device has failed - the wrong signal is fixed;
• 18226 P1818 or 18221 P1813 - failures in the operation of the electrical circuit were recorded.

The above errors appear like this:

• transport moves jerkily with an increase in speed;
• during gear shifting, the car twitches;
• from time to time, the impossibility of engaging reverse gear appears;
• sometimes, especially for the Audi A6, the car cannot be removed from position P (parking mode).

If you are faced with such problems, then you have only two options - go to the dealer and pay a lot of money for CVT repairs or go to a specialized service station and also pay money, but an order of magnitude less. Self repair at home is not allowed, because for this you need to have at least the necessary knowledge and expensive equipment that is not sold in stores.

The electrical unit itself is located behind the back cover of your CVT. But keep in mind - if this device is being repaired, you will also have to spend money on transmission oil. In no case is it allowed to fill in a fake or counterfeit, so you will have to purchase original products. Otherwise, forget about the normal operation of the gearbox. Fluid marked G 052 180 A2 (G052180A2) can be purchased from a dealer or ordered online.

At present, there are many kinds of expensive and quality oils, but only the original is needed. Of course, the fluid can be good, but the lubrication and viscosity characteristics must be as required by the manufacturer. Otherwise mechanical part The CVT will fail earlier and repair will not help here.

Many drivers know how to drive an Audi A4 automatic box. But for some, our article will serve as a small introductory lesson on the topic of studying the automatic transmission of this well-known automaker.

A bit of the history of the Audi brand.

Father and inspiration car brand Audi is Ferdinand Piech, who in 1974 took over as department head promising developments companies. Being not only a talented designer, but also a competent, perspicacious marketer, Pih managed to convince the company's management of the need to radically change the company's position in the market.

He began the development of a passenger car with all-wheel drive, experimenting with aluminum, and in 1980, Audi surprised motorists around the world by presenting an all-wheel drive sports coupe at the Geneva Motor Show Audi Quattro . This model was truly revolutionary, because before that all-wheel drive was the privilege of trucks and SUVs. For Pich, it was a kind of experiment that fully justified his expectations. Continuing to develop the concept of all-wheel drive in cars, he releases in 1984. Audi Models 90, which was developed only for sales in the US, and its European counterpart, the Audi 80.

Audi Quattro 1980

The Audi 100, which was released in 1990, became the most expensive model of the automaker. This is the first car that Audi has made its presence known in the premium class. Wealthy customers could purchase a model with a new six-cylinder V-type engine, which was the lightest and most compact among similarly powerful brothers.

Audi 100

Thanks to the new fuel injection system and other innovative solutions Audi engineers managed to remove 174 full-fledged horsepower from a 2.8-liter unit. At the same time, the new engine retained more power even at high speeds.

New representative in the lineup

Continuing to conquer the elite segment of the car market, the automaker produces in 1994 Audi sedan A8. heavy and powerful car executive class was popular due to the increased stability (and hence safety), which was provided by the same all-wheel drive.
In 1996, the company presented the world with a compact Golf class car - the Audi A3.

Audi A8

The development costs of the model turned out to be minimal, since the production of this car was based on the ready-made VW Golf platform. However, thanks to the sporty style and high quality interior, the class of the car turned out to be a step higher, which brought it closer to competitors from Mercedes and BMW.
For a long time, Audi did not offer anything worthy to SUV lovers, while the company's competitors already offered their customers several models of cars of this class. The Q7 SUV, which appeared in 2005, made up for this delay by instantly gaining popularity among admirers of giant cars.

Model A4.

The successor to the Audi 80, which was produced from 1986 to 1994, is the A4 model, which entered the series from November 1994. The car has acquired a more rapid outline of the body, and the magnificent interior of the cabin conquers with its comfort. Along with this, the new model has a number of improvements regarding passive safety: the car holds a blow to the side pillars better, to basic configuration added two side airbags (in addition to two front)

Audi A4 1994

Car enthusiasts can order this model in one of several variations:

• 1.6 or 1.8-liter petrol engine with 4 cylinders (101 and 125 hp respectively),
• 2.6 and 2.8-liter V-shaped six-cylinder engine (174 hp),
• and a 1.9-liter turbodiesel (110 hp).

The car body is made of galvanized steel, thanks to which it is completely protected from corrosion. The proof of reliability and quality is the 10-year warranty on the body, which is provided by the manufacturer.

Models with a gasoline engine were equipped with Tiptronic, which allowed you to shift gears and in manual mode. This option allows an experienced driver to show their skills.

Automatic transmission for Audi A4.

Currently, the Audi A4 uses two models of automatic transmission:

• "AG-4" for a naturally aspirated four-cylinder engine developed by VW;
• "5 HP 18" for six-cylinder engine(developed by ZF).

New Audi A4 s automatic transmission gear

Both models are controlled by an electronic-hydraulic method. The inclusion of gears depends on the following parameters:

• engine speed;

In addition to input parameters, control takes into account:

• the driving style of the driver (having recognized it, the machine independently sets the gearshift points);
• terrain (shift mode on a mountain road will be different from the mode on a flat road).

How to operate this automatic transmission.

• Starting a car from a place. As soon as you start the engine, put the car on the brake, and only after that move the selector lever from position P or N to the range of motion you need. Otherwise, your vehicle will start to move at low speed.
• Under no circumstances depress the brake and accelerator pedals at the same time. Under normal conditions, the automatic transmission should be in the “D4” position all the time.
• Operate the accelerator pedal smoothly, without jerking. In this case, the automatic transmission will shift to higher gears quickly, thereby ensuring low fuel consumption. Use ranges "2" "1" only in those cases when you need to make quick engine braking or eliminate unnecessary shifts of the machine to higher gears.
• Kick-down mode. At low speeds, you can downshift by fully depressing the accelerator pedal. This will allow you to use full power engine to accelerate the car.
• Vehicle stop. When the car is stopped, the selector lever may remain in one of the ranges of motion. The engine will run at idle.

Gearshift selector Audi A4

• At the moment of stopping on a slope, if one of the ranges of motion is enabled on the automatic transmission, and the car is held by the brake, do not increase the crankshaft speed. Switch off the engine during a long stop.
• Maneuvering. When maneuvering in small areas (garages, parking lots, etc.), use the mode with the accelerator pedal fully lowered. Adjust the speed by lightly pressing the brake pedal. Never press the brake and accelerator pedals at the same time.

Auto box diagnostics.

There are many methods for diagnosing an automatic transmission. Consider the main ones that allow you to assess the state of the automatic transmission.

• Oil condition and level.
• The level is checked with a dipstick with risks applied to it. The oil should be pure red with no burning smell. If the oil is drained into a separate container, then when it is mixed, whitish streaks should not remain.

engine compartment Audi space A4 with V6 engine

Ready time. Warm up the car to normal speed idle move. Standing on the brake, switch N-> D and N-> Dh and note the time before the push (the moment the machine is turned on). It should not exceed 1 second. Now switch N->R and note the time again. You should get less than 1.2 seconds. If the time intervals are higher than indicated, then this means the wear of the friction clutches.

Diagnostics on the road

1. Choose a straight section of road.
2. Check the position of the accelerator and its indication on the instrument panel.
3. With the selector in D, alternately accelerate and decelerate the car at half and full throttle. Make sure you are switching 1->2, 2->3, 3->4 and 4->3, 3->2, 2->1.
4. While driving in fourth gear, shift the selector to position 5 and check that the shift 4->3 occurs immediately.
5. Enter Dh mode. See if there is any switching on 1 and 4, and how the switching 2->3 and 3->2 is going.
6. While the car is moving in gears 2, 3, 4, listen, the automatic transmission may be buzzing.

Diagnostics by codes. There is a diagnostic connector under the hood of your car. Connect the jumper pins TAT ​​and GND and turn on the ignition. The HOLD lamp should light up once for a few seconds and go out. If after that it continues to flash in pulses (short or long), your car's automatic transmission needs to be repaired.

Planned technical Audi service A4

Diagnosis of the mechanical part of the automatic transmission. It is carried out without disassembly by checking the pressure (linear) in all modes. But this procedure cannot be carried out without special equipment.

Repair box automatic Audi A4

Automatic transmission repair always begins with diagnostics (often - computer). Sometimes it happens that as a result of diagnostics, a cause is revealed that is not related to the mechanics, but to the electrics of the machine. You can talk about how much it costs to repair an automatic box only after the volume and complexity of the work has been determined.

Most common cause failure of the machine is a banal negligence in relation to timely maintenance. For example, if the oil and oil filter were not changed on time, and the box was allowed to overheat (slipped, towed a trailer, your car has a clogged radiator, etc.), then the following will happen:

• There is a shortage of oil on the torque converter sleeve;
• The bushing rotates, the rest of the oil flows out of the box;
• Clutches burn out without oil.

For example, the cost of repairs in this case (oil and filter change) will be about 3,000 rubles.

The love of our motorists for representative German sedans is truly boundless. And if someone does not have enough funds for new car, then he will certainly postpone and sooner or later, but the "German". But does it make sense? After all, not only are executive cars expensive in themselves, but they also do not provide for their own repairs and maintenance. Or is it not so scary? Let's try to understand this using the example of the Audi A6 in the C6 body, which, without any exaggeration, can be called one of the most popular cars in this class.

Appearance of the Audi 6 in the back of the C6

In our review, we will focus not on the advantages of the Audi A6 C6, which abound, but on the description possible problems that may arise from the owner of a used German car.

Problems with the body and interior of the Audi A6 C6

To Audi body A6 C6 no complaints. Cars of this brand have long been famous for the fact that. But in the cabin, which is quite unexpected, "crickets" can live. And let not so many elements create extra sounds(most often it is the lining of the central pillars and the armrest between the front seats), but for a car of this class, even this seems like overkill. Although there are no complaints about the quality of finishing materials. Even on the oldest cars, you won't see worn leather trim.

Be sure to check the condition of the headlights and taillights. The headlights themselves can fog up due to moisture getting into them, but this problem fades against the backdrop of problems with LEDs on the restyled Audi A6 C6. LEDs look very nice, but they do not differ in durability. And if at least one LED burns out in the headlight, then the entire “eyelash”, which has long become a signature element of this particular model, stops burning. Also check the operation of the headlight washers. If the previous owner rarely used it, then it is possible that the washer nozzles have already turned sour.

Engine problems

Audi A6 C6 gasoline engine

Audi A6 C6 engine

There were a lot of engines for the Audi A6 C6, but petrol units with direct fuel injection FSI (2.4; 3.2; 4.2 liters) it is better to bypass. aluminum block these engines has special coating, which over time under the action high temperatures begins to collapse, which leads to scuffing on the walls of the cylinders. As a result, oil consumption increases, the engine starts to work more noisily and with increased vibrations. The power is thus reduced. At the same time, focus on some kind of mileage when buying a car with FSI engine will not work.

Some owners encountered the first problems only after 200 thousand kilometers, but if you look at the statistics, it turns out that on average these nursed about 120-150 thousand kilometers. And besides the short-lived coverage, there are enough problems. The same unit with a volume of 3.2 liters is notorious for the fact that the chain in its gas distribution mechanism, after 100-120 thousand kilometers, began to stretch, which required its immediate replacement. And this, due to its not the best availability, is quite expensive.

So it’s better to look at cars with a 2.8-liter gasoline unit that develops 190 Horse power. This unit is also very technologically advanced, but there are fewer problems with it. Although he also loves quality and timely service. Without it, do not even count on trouble-free long-term operation.

Video: Resale project: review of the Audi A6 3.2 quattro

But it is even better to find a car with a simple and reliable atmospheric three-liter gasoline engine. But keep in mind that this unit was no longer installed on cars that were produced after 2008. In it, every 100 thousand kilometers will have to change the belt in the gas distribution mechanism. And this is quite difficult to do, because to replace it you have to disassemble almost half of the front of the car.

Also on this engine every 90 thousand kilometers you will have to change the coils, and after 150 thousand kilometers you will have to deal with leaking oil seals and antifreeze leaks from under the head gasket. Around the same mileage, the engine begins to consume oil. So don't forget to keep an eye on it. But in any case, it is this engine that seems the best choice for used Audi A6 C6.

Audi A6 C6 diesel engine

Diesel engines against the background of gasoline units look even more interesting, but hardly anyone can guarantee that our diesel fuel they will work flawlessly. It is possible that very expensive fuel injectors will turn into consumable. Yes, and the runs of diesel cars from Europe are very high. So be prepared that immediately after buying an Audi A6 with turbodiesel engine you will have to change an expensive turbine, which usually fails by the mark of 250-300 thousand kilometers. By the same time, the chain in the gas distribution mechanism will require replacement. So in the case of a used Audi A6 with a diesel engine, saving on fuel will not work. All savings at once will be crossed out by one serious breakdown.

Audi A6 C6 gearbox problems

Tiptronic Audi A6 C6
Among the gearboxes offered for the Audi A6 C6, preference should be given to the Tiptronic automatic transmission. It is quite reliable, although some owners complain that the transition from first to second gear is a little jerky. But this is not a malfunction. Official dealers claim that this is a feature of the operation of this gearbox. But if the jerks during switching are too large, then say goodbye to this instance without regret, since everything goes to the point that it will need to replace the valve body. Usually such a replacement is required after a run of 100 thousand kilometers. Also, in the "automatic" every 80 thousand kilometers, you will have to change the oil, although the manufacturer claims that it is designed for the entire life of the car.

Multitronic Audi A6 C6

The Multitronic CVT is slightly less reliable. He is afraid of sluggish congestion, because in such conditions the clutch discs are very hot, which clearly does not extend their life. Also, be prepared to change the oil in the variator every 40-60 thousand kilometers, and if the car spends most of the time in urban traffic jams, then the variator itself may require repair by a run of 100 thousand kilometers. Although in more benign conditions, it can withstand 250 thousand kilometers without problems.

The manual gearbox on the Audi A6 C6 is also quite good, but it is hardly appropriate at all in a car of this class. So with all its pluses, you can say goodbye to it without regret.

Video: 2007 Audi A6 C6 / Choosing a used car

Suspension Audi A6 C6

The suspension of the Audi A6 in the body of the C6 is reliable. upper arms and steering tips can withstand 100 thousand kilometers without problems. 20 thousand kilometers more withstand wheel bearings and stabilizer bars. After another 40 thousand kilometers, you will have to change the shock absorbers. The rest of the "consumables" will require replacement only when the mileage exceeds 200 thousand kilometers.

About small claims and steering. On some cars, the steering force regulator failed, but this problem cannot be called widespread.

Brake system and electrical problems

But the braking system could be more reliable. If an electromechanical brake is installed on your car, then be prepared that after 100 thousand kilometers it will fail. The same service brake system no different from that on cars of other brands. Every 30-40 thousand kilometers it is necessary to change the front brake pads. Rear brake pads last twice as long.

And finally, it is worth talking about problems with the electrician. There is a lot of it in the Audi A6 C6, so from time to time you will have to mess with it. Even a banal battery replacement will require qualified intervention. And all because of the huge number of electrical units, all information from which is transmitted to the head on-board computer, which provides correct work all systems.

Still want to become the owner of a used, but still prestigious German sedan or station wagon? If yes, then be prepared to pay a lot of money for its maintenance. And the more high-tech components in your car, the higher your cost of maintaining the car. But the pleasure of Audi ownership A6 C6 is great.

Conclusion:

So, if the desire to own a "six" is still great, look for an instance with a three-liter gasoline engine and a Tiptronic "automatic". It is this option that can be considered optimal.

Demand for the Audi A6 C6 series is high: if the car is in good condition, it sells very quickly. Most of the copies on the Russian market are imported from Europe, the rest are from the USA or officially sold in Russia. In Europe, the A6 C6 was the best-selling car in the segment for three consecutive years from 2005 to 2007, with a turnover of about 120,000 units per year.

Prices for an Audi A6 C6 in good condition start at 400-500 thousand rubles, while for more recent copies they ask for about 1,000,000 rubles. The fall in value is generating interest in the car from people who are not really able to maintain it. Having bought a used A6 with the last of his money, or, worse, on credit, the owner soon realizes that operating costs "bring him to his knees." Moreover, the complexity of the design of the A6 C6 excludes the possibility of independent or cheap repairs.

With regards to copies from Germany, it must be understood that the Germans got rid of the "good" Audi A6 for two reasons: after a serious accident or because high mileage reaching 300,000 km. An annual mileage of 50,000 km is common in Europe. Honest owners of autocommission shops argued that buying an A6 in Germany from the first owner for resale was unlikely. Such copies are very expensive, and do not provide an opportunity to make good money. One of the used car dealers admitted that the odometer reset procedure is in the order of things, and it is more difficult than in the previous version, but easier than in the BMW 5 E60.

Body and interior.

The organization of the internal space can only be described in one word - amazing! As a result of the location of the engine in front of the front axle, and not behind it, in the depths of the body, as in BMW, it was possible to get a huge cabin. The disadvantage of this arrangement is the large front overhang, which causes many drivers to injure front bumper when parking at high curbs.

A6 has the most big trunk in its class - 555 liters, while in BMW it is 35 liters less, and in Mercedes - 15 liters. The shape of the Audi trunk is more correct. Under the floor there was a place for a full-size spare wheel and battery installed on the right side.

In the case of Audi, there is no need to be afraid of rust. Vehicles from Ingolstadt are renowned for their good corrosion protection, "double galvanized" sheet metal. Body elements front of the A6 C6 are made of aluminum, like the BMW 5 Series E60. If during the inspection “red spots” are found, especially on the hood, fenders and trunk lid, then you can be sure that the car has had accidents in the past. It was the hood and fenders that were originally made entirely of aluminum, which is not subject to corrosion. Often, after damage, cheap alternative substitutes made of heavier sheet metal are installed. However, recently traces of corrosion can be found in the threshold area.

Chassis.

Aluminum parts are also used in the suspension. For example, the front lower wishbones. The suspension has a complex multi-link design, which is common for this class. However, chassis elements wear out too quickly. The front levers, as a rule, have to be sorted out every 100,000 km (from 17,000 rubles for a set of levers). Rear arms nursed up to 200,000 km.Front wheel bearings can make noise after 100-120 thousand km.

As options in the A6, an air suspension was offered with the ability to change the clearance (included in basic equipment Allroad models). The air suspension is more reliable than the Mercedes analogue, but do not forget that when it comes to replacing shock absorbers with built-in pneumatic elements, the service will issue a five-figure bill - 70-80 thousand rubles. Failures in the system are often caused by rotten wiring (about 8,000 rubles). If you travel for a long time with a faulty pneumatic system, then the compressor and valve block may fail (over 23,000 rubles).

The Audi A6 is able to surprise with very effective brakes, but the front brake discs and pads wear out pretty quickly. And the cost of replacement will certainly disappoint you. Electric parking brake included in the standard equipment. Its malfunctions are common (more often due to wiring problems).

Electronics.

Audi A6 C6 received a large number of different electronic systems. Unfortunately, with age, owners have to deal with minor malfunctions in its operation. For example, parking sensors fail (from 1,000 rubles for an analogue or 5,000 rubles for an original). Or the cooling system fan control unit fails (contacts rot).

All vehicles are equipped with a Multi Media Interface - MMI for short. This is an integrated on-board electronics system with a display in the center console and a controller between the front seats. There are several varieties of it: 2G Basic, 2G High, and after restyling 3G with navigation, DVD and hard drive. MMI does not allow as many nodes to be controlled as BMW's iDrive. The Audi driver can only find out how soon he needs to report for maintenance. However, using the diagnostic interface, you can unlock hidden features, such as oil level detection or battery charge voltage. Using VAG-COM or VCDS, it is quite possible to change many parameters on your own various devices. However, without proper knowledge, it is easy to bring the car to a complete blockage.

Transmission.

The least stable is the Multitronic CVT, which is present only in cars with front axle drive. Problems with the variator may arise after 100,000 km. Much more reliable is the Tiptronic automatic with a classic torque converter, which was used exclusively in Quattro all-wheel drive modifications.

Audi claims that it is not necessary to change the oil in the box, but this is not true. Without an oil change, automatic transmissions reach a maximum of 200-250 thousand km, and Multitronic ends even earlier. It is recommended to change the oil every 60,000 km. Then the machine is able to cover more than 400,000 km. For problems with any of automatic transmissions before going to the service, you should stock up on an amount of about 100,000 rubles.

Drive unitQuattro.

Full system Quattro drive available in all variants, except for cars with 2-liter engines. Traction to the wheels is transmitted constantly to all four wheels, but in a different ratio. Torsen central differential is responsible for the distribution of torque along the axes. In addition, on the front and rear axle an electronic simulation of the differential lock mechanism is used.

It should be noted that the all-wheel drive system is very reliable. Faults are extremely rare, and even then, only among those who like to "light up": the transfer case bearings wear out, and the shank play appears.

The manufacturer claims that the transmission fluid is filled for the entire service life. But in reality, the fluid resource is much less than the transmission itself - a hum appears. It is recommended to change the oil at least once every 100,000 km.

Engines.

The palette of engines includes 20 different options, 12 of them are petrol.

In the short term, the cheapest to operate are gasoline engines especially the 3 liter one. a common problem gasoline units - unstable ignition coils. Owners diesel versions high costs for the replacement of expensive equipment.

The most risky is the 2.0 TDI diesel with unit injectors. The most common defects: drive wear oil pump and cracking of the block head. In addition, failures plagued the pump injectors and the EGR valve.

In 2007, the 2-liter turbodiesel received a " common rail", and the shortcomings were eliminated. However, he began to cause problems with the injection pump. Keep in mind that the 140-horsepower and 170-horsepower versions of the power plant have many design differences. The most important of these is the presence in more strong motor piezoelectric injectors that cannot be restored.

Diesel V6s cause a lot of controversy. All engines use a Common Rail type injection system and a chain-type timing drive, which includes a group of chains. Unfortunately, it cannot be called unattended. After about 150-200 thousand km, problems arise with the upper timing chain tensioner. If the chain were placed in the usual place - in front of the engine, then the replacement would not be difficult. But Audi engineers went too far, placing the timing drive on the side of the gearbox. Therefore, to get to the tensioner, it is necessary to completely dismantle the engine. AT best case for repairs will have to pay 50-60 thousand rubles.

Some owners ignore drive chain noise camshafts, claiming it's okay. In an advanced case, when the noise becomes too loud, the chain can jump a couple of teeth, which can damage the valves. In this case, the repair will require at least 100,000 rubles. After restyling in 2008, the problem with the tensioner was solved. However, by 250,000 km, the timing chain is often stretched.

Also in TDI engines there are malfunctions typical of modern diesel engines. For example, a malfunction of the intake manifold flaps that change its length. The cost of a new collector is about 30,000 rubles. In addition, it may fail throttle assembly(gear wear) or DPF differential pressure sensor. After 200-250 thousand km, you should be ready to replace the turbocharger.

However, doubts about durability diesel engines does not occur. If you replace, albeit expensive, a faulty unit, then you can continue to drive almost forever. It is not uncommon for an A6 with a 2.0 TDI engine to run 500,000 km in 4-5 years as a taxi, and continue to work properly further. However, many owners, in anticipation of big expenses, simply give away their car for little money.

Gasoline engines require less maintenance costs as long as they are in good condition. However, in the case of TFSI, it is not uncommon for the ignition coils, thermostat, and sometimes the intake manifold to cause trouble. The latter ailment is very expensive to eliminate. The 2.0 TFSI has a complex equipment, and the simplest in design is a 2.4-liter V6 without a direct injection system. True, it is not without flaws.

Engines 2.4, 2.8 FSI, 3.2 FSI and 4.2 FSI have problems with the timing chain drive similar, in fact, to the 3.0 TDI: premature wear and difficulty in replacing (timing drive from the box). Some specialists have adapted to change chain drive Timing of engines with a volume of 2.4, 2.8 and 3.2 liters without removing the engine.

All atmospheric gasoline units, with the exception of the 3-liter, sometimes present unpleasant surprises in the form of scuffs and, as a result, excessive consumption oils. There are several reasons: faulty fuel injectors that flush oil from the cylinder walls; tightening with oil change; low-quality oil and lack of control over its level.

Operation and costs.

A typical problem of the restyled version is the burning LED lights (LED) in the headlights and rear lights. Apparently, the engineers considered that they would be eternal, since they did not provide for the possibility of replacing the LEDs separately from the headlight. Fortunately, craftsmen have learned how to restore the performance of optics by replacing burned-out LEDs and resistors. In copies produced in the early years, the MMI system sometimes freezes. In this case, it often helps to install a new software. But sometimes you can’t do without visiting a specialized service.

Unfortunately, we have to admit that the image of the Audi A6 C6 is a bit overrated. Some copies constantly annoy with malfunctions, especially cars of the initial period of production. Buying a good A6 for 400-500 thousand rubles is quite realistic, but it is unlikely that it will fully satisfy the owner in the future. Only cars after restyling in 2008 became more thoughtful and reliable. Worst of all, neither low mileage nor regular visits to the dealer service station protect against many malfunctions.

While the Audi A6 has not broken down, it is difficult to find serious flaws in it. excellent finish, rich equipment and most spacious salon are a real delight in the classroom. The interior looks great with no signs of fatigue even after two three hundred thousand kilometers. This is very pleasing to any kind of merchants who, without any fear, rewind the odometer counter back 100-200 thousand km.

Add positive emotions powerful engines and Quattro all-wheel drive system. However, significant flaws are of concern. gasoline engines, the probability of which increases with increasing mileage.

Special versions.

AudiA6All road

The Audi A6 Olroad was produced from 2006 to 2011. All cars on the standard equipment list had an all-wheel drive system and air suspension. As engines, petrol 3.2 or 4.2 liters and diesel - 2.7 and 3.0 TDI were offered. The vast majority of copies have a Tiptronic automatic transmission. The cost of the car is very high.

AudiS6 andRS6

While the S6 looked pretty "decent", the RS6 introduced in 2008 was a real monster with heavily flared wheel arches. Both models used a V10 engine: the S6 had a displacement of 5.2 liters and produced 435 hp, and the RS6 5.0 liter produced 580 hp. At first, the RS6 was only available as an Avant station wagon, but a year later, a sedan appeared.

The 5.2-liter V10 has the same basic design as the 3.2 and 4.2-liter engines. V10 has a tight layout - neighboring cylinders are too close. As a result, the motor experiences huge thermal loads, which contributes to the rapid aging of the oil. The use of oils like " long life"And, accordingly, long drain intervals contributed to engine wear for another 100,000 km. The problem affected almost all instances of 2007-2008. Later, a number of changes were made, including a shortened oil change interval, but a high risk overhaul preserved.

Specifications:

Audi S6 C6: 5.2 V10, power - 435 hp, torque - 540 Nm, maximum speed 250 km / h, acceleration 0-100 km h - 5.2 seconds

Audi RS6 C6: 5.0 V10 biturbo engine, power - 580 hp, torque - 650 Nm, top speed - 250 km / h, acceleration 0-100 km / h - 4.5 seconds

StoryAudiA6 C6.

2004 - end of production of A6 C5, debut of A6 C6.

2005 - start of sales, the appearance of the Avant station wagon version.

2006 - the appearance of the Allroad modification (only in the station wagon body with air suspension). The lineup replenished the S6 with a V10 engine.

2007 - 2.8 FSI appeared in the engine line.

2008 - restyling, affecting the front and rear of the body. Behind appeared led lights. In front of the modified bumper and fog lights. Inside, a new central display was installed, the instrument panel was changed, and a new MMI 3G controller was introduced. RS6 presentation.

2010 - End of RS6 production.

2011 - the new generation A6 sedan C7 is introduced.

AudiA6 C6 - typical problems and malfunctions:

• - failure of dampers intake manifold 3.0 TDI
• - failure of the oil pump drive in the 2.0 TDI engine
• - defective timing chain tensioner and problems with injectors in 2.7 and 3.0 TDI engines
• - failure of the pneumatic system
• - problems with continuously variable transmission Multitronic
• - oil pressure sensor failures
• - problems with the trunk lock
• - ingress of water into additional brake light station wagon Avant

AudiA6 C6 in reliability ratings

GTÜ: Vehicles under 3 years old received a bad mark for brakes. For other parameters, the result is better than the average values ​​in the class.

T Ü V : cars aged 4-5 years were rated excellent and ranked 19th in the reliability rating. Audi A4 and A8 are higher in the same rating.

DEKRA: in 87.7% of the examined A6 C6 there were no technical defects. Serious faults were found in 3.5% of cars, and minor faults in 8.8%.

• - gasoline modification with a 3-liter engine and a manual transmission - the cheapest offer among used A6
• - vehicles with traditional suspension and Quattro all-wheel drive
• - versions with 3.0 TDI and complete history service

Avoid:

• - 2.0 TDI with unit injectors - regardless of mileage
• - vehicles with Multitronic CVT
• - diesel versions with 3.0 TDI whose service history cannot be verified
• - cars with any malfunctions and powerful S6 with a 5.2-liter V10. Any repair will be astronomically expensive.

Advantages:

• - perfect protection against corrosion
• - the most spacious salon among German classmates
• - excellent all-wheel drive system
• - very large trunk

Flaws:

• - unsuccessful turbodiesel 2.0 TDI pre-styling version
• - very complex front and rear suspension design
• - most copies secondary market have an unsatisfactory technical condition, twisted odometers and traces of recovery after an accident

Version	2.0TFSI	2.4	2.8 FSI	2.8 FSI	2.8 FSI
Engine	petrol turbo	petrol	petrol	petrol	petrol
Working volume	1984 cm3	2393 cm3	2773 cm3	2773 cm3	2773 cm3
	R4/16	V6/24	V6/24	V6/24	V6/24
Max Power	170 HP	177 HP	190 HP	210 HP	220 HP
Max Torque	280 Nm	230 Nm	280 Nm	280 Nm	280 Nm
Dynamics
Max Speed	228 km/h	236 km/h	238 km/h	237 km/h	240 km/h
Acceleration 0-100 km/h	8.2 sec	9.2 sec	8.2 sec	8.4 sec	7.3 sec

Specifications: Audi A6 C6 (2004-2011) - petrol versions.

Version	3.0TFSI	3.2 FSI	4.2	4.2 FSI
Engine	petrol turbo	petrol	petrol	petrol
Working volume	2995 cm3	3123 cm3	4163 cm3	4163 cm3
Arrangement of cylinders / valves	V6/24	V6/24	V8/40	V8/32
Max Power	290 HP	255 HP	335 HP	350 HP
Max Torque	420 Nm	330 Nm	420 Nm	440 Nm
Dynamics
Max Speed	250 km/h	250 km/h	250 km/h	250 km/h
Acceleration 0-100 km/h	5.9 sec	6.9 sec	6.5 s	5.9 sec
Average fuel consumption in l/100 km			11.7	10.2

Gasoline engines - a brief description

The 2.0 TFSI is the only 4-cylinder petrol engine in the range. In other VW Group vehicles, it has more high power. In this model, he is assigned the role of the base motor. power unit too weak and has serious drawbacks: high oil consumption and accumulation of deposits in the block head. It is worth noting that this motor is different from those that were installed in the A4, A5 and Q5, where they earned a bad reputation as an oil eater.

2.4 - has the simplest design in the A6 C6 engine line and uses distributed fuel injection. Typical malfunctions: failure of the thermostat and dampers in the intake manifold. There is a high risk of scuffing on the cylinder walls.

2.8 FSI- modern engine with direct injection system, variable valve timing and timing chain. He is also prone to scuffing, but it is more difficult to line the engine - the cylinder walls are too thin.

3.0 is an old design engine that was used by its predecessor. It has a belt-type timing drive, for the replacement of which it is necessary to disassemble the front of the car. Naturally aspirated V6 port injection very reliable, but finding a car with such an engine in good condition is a big problem.

3.2 FSI - has direct injection fuel and is usually combined with a Tiptronic automatic transmission.

4.2/4.2 FSI - Audi's V8 sounds great and drives well. Fuel consumption at an acceptable level - 13-15 l / 100 km. Until 2006, a version with distributed fuel injection was used, and after that - with direct fuel injection (FSI). The first has a combined timing drive: belt + chain, and the second has a chain. FSI is slightly lighter and more economical, but not as durable as before. Soot accumulates on the intake valves, and there are problems with the durability of the timing chain drive. The reliability of the upper timing chain also raises questions in the version with distributed injection.

Version	2.0 TDIe	2.0 TDI	2.0 TDI	2.7 TDI
Engine	turbodis	turbodis	turbodis	turbodis
Working volume	1968 cm3	1968 cm3	1968 cm3	2698 cm3
Arrangement of cylinders / valves	R4/16	R4/16	R4/16	V6/24
Max Power	136 HP	140 HP	170 HP	180 HP
Max Torque	320 Nm	320 Nm	350 Nm	380 Nm
Dynamics
Max Speed	208 km/h	208 km/h	225 km/h	228 km/h
Acceleration 0-100 km/h	10.3 sec	10.3 sec	8.9 sec	8.9 sec
Average fuel consumption in l/100 km

Specifications: Audi A6 C6 (2004-2011) - diesel versions

Version	2.7 TDI	3.0 TDI	3.0 TDI	3.0 TDI
Engine	turbodis	turbodis	turbodis	turbodis
Working volume	2698 cm3	2967 cm3	2967 cm3	2967 cm3
Arrangement of cylinders / valves	V6/24	V6/24	V6/24	V6/24
Max Power	190 HP	225 HP	233 HP	240 HP
Max Torque	400 Nm	450 Nm	450 Nm	500 Nm
Dynamics
Max Speed	232 km/h	243 km/h	247 km/h	250 km/h
Acceleration 0-100 km/h	7.9 sec	7.3 sec	6.9 sec	6.6 sec
Average fuel consumption in l/100 km

Diesel engines - a brief description.

2.0 TDIe - A small "e" means a small sacrifice in favor of the environment: power is reduced by 4 hp, a particulate filter is installed and tires with reduced rolling resistance.

2.0 TDI 140 HP - a turbodiesel with pump nozzles, the purchase of which should be discarded. A 2-liter turbodiesel can only be considered after modernization in 2007, when a Common Rail type power system was used.

2.0 TDI 170 HP - the engine differs significantly from the 140 strong counterpart, including the presence of piezoelectric injectors that cannot be repaired.

The 2.7 TDI is the predecessor of the 3.0 TDI, has a common rail injection system and a timing chain drive. The most reliable in the pre-styling version.

3.0 TDI - initially had many problems, in the future they were gradually eliminated by Audi engineers. A turbodiesel makes for great driving pleasure, but is very expensive to maintain and repair.

Conclusion.

Don't fool yourself. Cheap Audi A6 of the first years of production is already seriously depleted, which means they promise big expenses. It is better to pay attention to more expensive restyled copies of recent years.