Audi A4 B7

The third-generation Audi A4 was produced from 2004 to 2007, representing a deeply modernized predecessor. The updated Audi received the internal designation B7.

Engines

The engine line was represented by gasoline and diesel units. Gasoline: atmospheric inline fours 1.6 liters (102 hp), 2.0 l (130 hp), 2.0 FSI (150 hp), as well as a V6 3.0 l (218 hp) and 3.2 l (255 hp), and a V8 4.2 l (344 hp). Turbocharged gasoline two - 1. 8 T (163 hp) and 2. 0 TFSI (200 hp). The diesel line is represented by seven units with a working volume of 1.9 to 3 liters, but the most widespread was the 2-liter turbodiesel with a capacity of 140 liters. with. The most common are Audi A4 B7 with gasoline engines with a capacity of 2.0 liters and turbocharged 1.8 and 2.0 liters. All engines have a timing system drive using a geared belt and hydraulic valve pushers that do not require adjustment. A turbocharged 1.8 is a fairly reliable engine. a 2-liter TFSI can cause problems. His disease is the formation of production on the pusher TNVD and camshaft at a run of more than 100 - 130 thousand km. Since 2007, pushers have been improved, and their resource has increased slightly. For supercharged engines after 100 - 140 thousand km is characterized by leakage of the valve cover, the elimination of which will require about 11 - 12 thousand rubles. One of the reasons for this phenomenon is a faulty valve ventilation crankcase gases. At the same time, the oil can push not only from under the valve lid, but also into candle wells, and whistles may also appear. The ignition coils rarely serve more than 100 - 120 thousand km, starting to fail one after another. The cost of one coil is about 1 – 1.5 thousand rubles. The engine supports run at least 150 – 200 thousand km. When running more than 120 - 150 thousand.

Transmission

In the Audi A4 B7 you can find 5- and 6-speed manual transmissions, a Multitronic variator and a 6-speed “automatic” Tiptronic (only on all-wheel drive versions). Some owners complain about the poor inclusion of the 1st and 2nd gear when running more than 90 - 140 thousand km. Perhaps after 180-220 thousand km will have to replace the mechanism of the gear lever and synchronizers. Clutch, as a rule, goes at least 120 - 150 thousand km. After 120 – 150 thousand km can throw problems Multitronic due to the failure of the control unit automatic transmission. In this case, the box goes into emergency mode, and the PRNDS line flashes on the dashboard. As a rule, repairs cost little blood 15-20 thousand rubles. On the ZF “automatic” engineers made a miscalculation in the compatibility of the working fluid and the algorithm of the box, which leads to its rapid wear. In search of a solution to the problem situation, the ECU box configuration programs and the working fluids used were changed. The optimized ATF fluid since March 2008 is green, before that time it was first used yellow and then blue. Problems arose when running more than 80 - 120 thousand km - were manifested by tremors during acceleration during gear shifting. The reason for the failure is the failure of the hydraulic transformer ("bauble"). The new hydraulic transformer will cost 40-45,000 rubles, and the work on its replacement will require about 8,000-10 thousand rubles. Of course, you can save money by repairing a faulty “donut” for 5-8 thousand rubles, but it does not last long.

Walking

The front suspension of the Audi A4 B7 is four-lever, the rear - on trapezoidal levers. Contrary to popular belief, the suspension of Audi is far from gentle and on our roads stretches at least 120 – 150 thousand km. Replacing the knocked levers at once will require about 35-40,000 rubles. The stabilizer racks run about 80 – 120 thousand km, about the same amount of the stabilizer bushings stretch. Shock absorbers will require replacement when running more than 140 – 180 thousand km (2 – 4 thousand rubles per piece).

After 120 – 150 thousand km often fails the “frog” brakes (600 rubles). This will prompt unreasonably illuminated simultaneously ABS and ESP, which dim after re-switching off and turning on the ignition. In addition, at the same time on cars with automatic transmission, the engine traction is significantly reduced.

When running more than 160 – 200 thousand km often begins to leak the steering rack. Repair it will cost 12-15 thousand rubles.

Body and salon

Problems with the central lock are more often caused by the oxidation of contacts on the driver's door lock control unit or a break in the wires in the corrugated corrugated connecting the body to the door. Over time, the electronic control unit of comfort systems can also be blinked, in this case, problems will arise with the management of the central lock, mirrors, cabin lighting, windows, mirror heating or fuel neck hatch. The parking sensors begin to give up when the mileage is more than 140 – 160 thousand km. On the keys of certain models from cars of the first years of release, there were problems with the response of Audi to pressing the buttons on the key fob. In this case, you will have to replace the key with a new one, which will cost 8-9 thousand rubles for the original and 3-4,000 rubles for an analogue from China. Over time, the external linings on the door handles begin to cling, and the windshield wiper drive mechanism sours. Xenon lamps illuminate their own 100 - 120 thousand km. The non-original lamp will cost 3 – 4 thousand rubles, the original one – 5 – 7 thousand rubles. In the cabin of runaways A4 begins to work poorly glove compartment lock and fails fixing the lock back of the rear seats. When running more than 120 – 150 thousand km, the air flow control valves in the cabin begin to fail, more often the recirculation valve. The reason is because of the wear of the servo drives. Air conditioning problems can occur around this time due to the failure of the air conditioner pressure sensor. To eliminate the malfunction, you will have to pay 1500 - 2000 rubles for the sensor and 500 rubles for work.

Engines

• A 2-liter TFSI can cause problems.
• Ignition coils rarely serve more than 100 - 120 thousand km, starting to fail one after another.
• A leaked or failed thermostat may have to be replaced after 140-160,000 km.
• Often gives a leak and a tee of coolant behind the engine.

Transmission

• km can throw problems Multitronic due to the failure of the control unit automatic transmission.
• As a rule, repairs cost little blood 15 – 20 thousand rubles.
• On the “automatic” ZF engineers made a miscalculation in the compatibility of the working fluid and the algorithm of the box, which leads to its rapid wear.
• In search of a solution to the problem situation, the configuration programs of the ECU box and the working fluids used were changed.
• Problems arose when running more than 80 - 120 thousand.
• The reason for the failure is the failure of the hydraulic transformer ("donut").
• Of course, you can save money by repairing for 5 – 8 thousand.
• To prolong the life of the box, car service stations recommend changing the oil more often, at least every 45 thousand km.

Walking

• Replacing the knocked levers at once will require about 35-40,000 rubles.
• km often fails "frog" brakes (600 rubles).
• The sleeve often begins to leak. Repair it will cost 12-15 thousand rubles.

Body and salon

• Problems with the central lock are more often caused by the oxidation of contacts on the driver's door lock control unit or by a break in the corrugated wires connecting the body to the door.
• Over time, the electronic control unit of comfort systems can also blink, in this case there will be problems with the management of the central lock, mirrors, cabin lighting, windows, heated mirrors or a fuel hatch.
• On the keys of certain models from cars of the first years of release, there were problems with Audi’s response to pressing the buttons on the key fob.
• In the cabin of runaways A4 begins to work poorly glove compartment lock and fails fixing the lock back of the rear seats.
• km begin to refuse the air flow control valves in the cabin, more often - the recirculation valve. The reason is because of the wear of the servo drives.
• Air conditioning problems can occur around this time due to the failure of the air conditioner pressure sensor.
• To eliminate the malfunction, you will have to pay 1500 - 2000 rubles for the sensor and 500 rubles for work.

That’s the whole background of the Audi A4 B7. In general, everything is not so bad, and the probability of the occurrence of these malfunctions on one car is low. The main attention should be paid to the automatic transmission, and when choosing a turbocharged car - to the state of the turbine, remembering that 1.8 T is much more reliable than 2.0 TFSI.

• Engines: A 2-litre TFSI can cause problems.
• Transmission: km can throw problems Multitronic due to the failure of the control unit automatic transmission.
• Driving: Replacing the knocked levers at once will require about 35 – 40 thousand rubles.
• Body and interior: Problems with the central lock are more often caused by the oxidation of contacts on the driver's door lock control unit or by a corrugated wire break connecting the body to the door.

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