Check a vehicle VIN check Latest recalls Latest complaints Common problems Rankings Compare vehicles Recall roundups All makes Guides Share your experience
Theme

Engine & cooling

Audi A6 Sedan Engine problems by year

8 complaints filed with NHTSA about the Audi A6 Sedan's engine & cooling. Stalling, loss of power, oil consumption, overheating, head gaskets, timing chains and engine failure.

Engine complaints by model year

YearEngine complaintsCrashesInjuriesRecalls
20261000
20057000

Latest A6 Sedan engine complaints

2005 Audi A6 SedanElectrical systemEngine & cooling

Very common problem - "ignition module defective" code at 190,000 miles. Temporary repair of the issue with dtc reset. Full logging of car data via obd-ii port reveals zero faults while car is running, and diagnostic traffic on the can bus at startup show zero faults. Once key is inserted in dash and turned to "accessory", module faults out without any traffic sent/received. Happens intermittently and dealership states this is a known problem. Dealership-only repair, per multiple audi service technicians, audi...

Read the full complaint

of america refuses to comply with massachusetts right to repair law by making available to independent repair shops, the necessary tools and equipment to access the immobilizer hardware. Dealer estimates/quotes range from $2100-$3700 to replace entire steering column with the attached and separable ignition module (accessible via 2 screws and 1 rivet). Dealerships refuse to replace/re-code only the ignition module, stating the entire steering column needs replaced. Multiple reports of the same issue with other c6 body audi a6 owners confirm the same details. Nothing is physically wrong with the ignition switch or module, and clearing diagnostic trouble codes allow the vehicle to start immediately. Suspect planned obsolescence of the part in question.

Filed Incident Electrical system · EngineNHTSA 10782288
2005 Audi A6 SedanSteeringWheels & tiresEngine & cooling

Engineering flaw lead to extraordinary expense replacing the entire steering column instead of just the module that failed. Doing some reviews on-line - seems to be a well known and common problem but audi does not want to do anything about it - http://www.Audiworld.Com/forums/a6-s6-c6-platform-discussion-58/transponder-steering-column-2834070/ millage listed as approx since car is in the shop now.

Filed Incident Steering · Wheels · EngineNHTSA 10760470
2005 Audi A6 SedanAcceleration & cruise controlEngine & cooling

Car stuttering. Depresses throttle to attempt to alleviate problem. Gas pedal stuck at full acceleration and maximum rpm. Set car into neutral and coasted to decelerate. After numerous attempts to disengage accelerator pedal, it finally sprung back from full throttle. *Tr

Filed Incident Vehicle speed control · EngineNHTSA 10595018
2005 Audi A6 SedanEngine & coolingDriver assistance

Driving 55 mph on the express way and the engine shut off completely. The car stalled until it came to a complete stop. The esp light and engine light came on. Restarted the car and problem continue 4 times. After the 4th attempt, I managed to get the car to the side of the road. After waiting several minutes, I restarted the car. The car still feel at times as if its going to stall. *Tr

Filed Incident Engine and engine cooling · Electronic stability control (ESC)NHTSA 10444942
2005 Audi A6 SedanEngine & coolingVisibility & wipers

After thirty minutes, ac vent on passenger side starts blowing very hot air. Ten minutes later the ac vent on driver's side does the same. A short while later the two center vents blow hot air. The next day is all starts over. Audi sent out a technical bulletin tb 2013883/1 doing a mea culpa stating it was their fault. When they manufactured it they got metal shavings from the engine into the ac pump. But they are not willing to fix it. I have an estimate for $1300. *Tr

Filed Incident Engine and engine cooling · VisibilityNHTSA 10428344
2005 Audi A6 SedanEngine & cooling

On 1/25/2007 car was cold in garage. Would not start on first or second attempts. On third attempt the car turned over but the epc light illuminated and the entire vehicle was heavily shaking and rocking back and forth. No power to drive the vehicle. Had it towed to the dealership (schaumburg audi). Dealer said the computer recorded multiple cylinder misfires but that there was nothing else they could find wrong. Car was kept overnight and returned to me when no further problems could be found and the event could not be replicated. Nothing was actually repaired and no parts replaced. *Jb

Filed Incident Engine and engine coolingNHTSA 10182106

Source: U.S. National Highway Traffic Safety Administration (NHTSA) complaints and recalls, checked daily. Complaints are owners' own reports and are not verified. How we use the data

Owners helping owners

Know before you drive.

Every experience you share - good or bad - shows on that vehicle's page and helps the next owner and buyer. Two minutes, anonymous.

Share your experience