There are 5 owner-reported brakes complaints for the 2003 Audi A6in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
CAR BRAKE LIGHTS ARE ON ALL THE TIME AND IT REVES ALL THE TIME. *TR
TL* THE CONTACT OWNS A 2003 AUDI A6 2.7 QUATTRO. THE CONTACT STATED WHILE TRAVELING 20 MPH THE ABS SYSTEM ACTIVATED CAUSING THE VEHICLE TO VEER TO THE LEFT. THE VEHICLE WAS ABLE TO BE DRIVEN TO THE CONTACT'S HOME. THE VEHICLE WAS TAKEN TO AN INDEPENDENT MECHANIC. THE VEHICLE WAS NOT REPAIRED. THE MANUFACTURER WAS MADE AWARE OF THE FAILURE. THE FAILURE MILEAGE WAS 89,000 AND THE CURRENT MILEAGE WAS 90,500.
FAULTY ABS MODULE. *TR
I HAVE LOCKED MY BRAKES AND HAD A NEAR ACCIDENT. MY ABS AND ESP HAS STOPPED WORKING ON MY 2003 AUDI A6. I WAS TOLD THE ABS CONTROL UNITS ARE KNOWN TO GO BAD, AND WILL COST OVER A $1000 TO FIX. I CANNOT AFFORD TO FIX. IF THIS IS A WIDESPREAD PROBLEM, SHOULDN'T AUDI BE HELD ACCOUNTABLE FOR ANY TRAFFIC ACCIDENTS DUE TO FAILURE, AND SHOULD THERE BE A RECALL? *TR
ABS CONTROL UNIT IS FAULTY ON MY AUDI A6 2003. I BELIEVE IT IS SUBJECT TO RECALL INDICATED BY THE $1800 REPAIR AND FREQUENCY OF THIS COMPLAINT ON THE INTERNET. *TR
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on Apr 26, 2026