Audi A6 Service Brakes, Hydraulic Problems
Owners have filed 106 complaints with NHTSA about service brakes, hydraulic problems on the Audi A6 across 12 model years. The 1999 model year has the most (31). The words owners use most often: “abs control” (13% of reports).
- 106service brakes, hydraulic complaints
- —median miles at failure
- 9mention a crash
- 3mention an injury
- 2related recalls
- $2,400typical repair cost reported by owners
- 33%of reports with a speed happened at 50+ mph
What owners describe
Phrases that appear unusually often in these complaints compared with complaints about other cars.
- ABS control: mentioned in 14 of 106 complaints (13%)
- Stopping distance: mentioned in 6 of 106 complaints (6%)
How much does it cost to fix?
Owners who wrote down what they paid or were quoted put the typical service brakes, hydraulic repair on the Audi A6 at $2,400, and half of them between $1,650 and $3,100.
Based on 13 NHTSA complaints about this problem alone that state a repair bill or quote (2004–2009), converted to 2026 dollars with the U.S. consumer price index. These are owners' own figures, not a quote: they include dealer quotes, and owners who file complaints often faced larger repairs, so they can run higher than typical shop prices. Prices vary by shop, region and warranty coverage. How we calculate this.
At what mileage do service brakes, hydraulic problems happen?
Based on 67 complaints that reported the odometer reading.
How serious are the reports?
Of 106 complaints, 9 mention a crash, 3 an injury.
Audi A6 service brakes, hydraulic complaints by model year
When owners reported it
Related recalls (2)
Service brakes, hydraulic:fluid
Model years: 2019, 2020, 2021
Problem: Volkswagen Group of America, Inc. (Audi) is recalling certain 2021 Audi S7, S6 Sedan, RS7, RS6 Avant, A6 Allroad, 2019-2021 A7, and A6 Sedan vehicles. An incorrectly labeled brake fluid cap may have been installed, which can result in the use of the wrong type of brake fluid.
Risk: Incorrect brake fluid can reduce braking ability and increase the risk of a crash.
Fix: Dealers will inspect the brake fluid reservoir cap and, if necessary, replace it, free of charge. Owner notification letters are expected to be mailed October 17, 2023. Owners may contact Audi's customer service at 1-800-253-2834. Volkswagen's number for this recall is 47T9.
Service brakes, hydraulic:power assist:vacuum:hoses, lines/piping, and fittings
Model years: 1998, 1999
Problem: Vehicle description: passenger vehicles equipped with automatic transmissions. A control valve in the vacuum hose connecting the brake booster to the intake manifold may not open or close fully at temperatures below -4 f under certain driving conditions.
Risk: This condition could cause insufficient vacuum to be provided to the brake booster.
Fix: Dealers will install a vacuum by-pass system into vehicles operated in these states which is designed to provide sufficient vacuum for full brake assist under all weather conditions.
What owners report
Short excerpts of recent complaints, with personal details removed. Full reports are on NHTSA.gov.
Tl* the contact owns a 2016 audi a6. While driving various speeds, the brake pedal was depressed and pulsated. The stopping distance was increased and there were no warning indicators illuminated. The vehicle was taken to a dealer where it was diagnosed with warped front brake rotors that needed…
2014 audi a6. Consumer writes in regards to a loud screeching noise when brakes are applied. *smd the consumer also stated there was smoke coming out of the tail pipe, and when she parked the vehicle in the garage, smoke filled the entire garage. The vehicle was towed to the dealership. An…
Car brake lights are on all the time and it reves all the time. *tr
Parking brake malfunction light on. Dealers found park brake switch was faulty. *tr
My 1999 audi a6 2.8 has abs control module failure. This appears to be a common problem among 1996 to 2001 audi's and vw's lack of anti-lock braking system control makes my vehicle unsafe. Audi is not willing to correct this problem. This problem affects a large number of vehicles.
Frequently asked questions
Do all Audi A6s have service brakes, hydraulic problems?
No. NHTSA has 106 owner complaints about service brakes, hydraulic for the Audi A6. Complaint data shows that the problem is reported, not how many of all cars sold are affected.
Was there a recall on the Audi A6 service brakes, hydraulic?
Yes: 2 safety recalls list service brakes, hydraulic. Check your VIN on NHTSA.gov to see whether the fix was done on your car.
How much does it cost to fix service brakes, hydraulic problems on the Audi A6?
Owners report a typical cost of $2,400 (half paid between $1,650 and $3,100), from 13 complaints that state a repair bill or quote, in 2026 dollars.
What do owners say about service brakes, hydraulic problems on the Audi A6?
The most frequent phrase is “abs control”, in 14 of 106 complaints, followed by “stopping distance” (6).
Other Audi A6 problems
- Electrical System problems (393)
- Air Bags problems (315)
- Engine problems (130)
- Fuel System, Gasoline problems (122)
- Steering problems (113)
- Engine and Engine Cooling problems (112)
- Power Train problems (112)
See all Audi A6 problems.