There are 5 owner-reported brakes complaints for the 2004 Audi A4in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
ON NUMEROUS OCCASIONS THE AUTOMATIC BRAKE SYSTEM ENGAGES THE BRAKES WITH NO WARNING. THIS DANGEROUS AND POSSIBLY DEADLY SITUATION HAS BEEN REPORTED TO THE MANUFACTURER AND MANY AUTHORIZED DEALERS.
I WAS DRIVING MY AUDI A4 2004 DOWN A SLIGHT SLOPE AND HAD TO STOP AT THE RED LIGHT JUST BEFORE CROSSING A MAJOR HIGHWAY (VA 123). AS I SAW THE RED LIGHT, I TRIED TO PRESS ON THE BREAKS AND AROUND THE SAME TIME, I REALIZED THAT THE CAR STARTED SHAKING AS IF IT WAS ABOUT TO STALL. HOWEVER, THE CAR DID NOT STALL AND THE BREAK WAS ROCK HARD. I COULDN'T APPLY THE BREAKS. I LOWERED THE GEAR AND USED THE HAND BREAK TO STOP THE CAR. I HAD THE CAR TOWED TO THE AUDI DEALER. DEALER TOLD ME THAT THE SUCTION PUMP VALVE SPLIT INTO TWO AND THAT IS WHY THE ENGINE SUDDENLY GOT TOO MUCH AIR AND THE BREAK POWER ASSIST ALSO FAILED. THEY HAVE REPLACED THE SUCTION PUMP. THE OLD PART HAS BEEN TRASHED. *TR
AUDI DEALER REPLACED FRONT BRAKE PADS, UNDER MAINTENANCE SCHEDULE. WITHIN 90 DAYS WET WEATHER BRAKING IN THE FRONT IS NILL! ONE HAS TO PUT THE LEFT FOOT ON THE PEDAL KEEPING THE PADS WARMED UP SO WHEN BRAKING IS NEEDED, BRAKE FORCE IS AVAILABLE. SOME DEALERS HAVE ACKNOWLEDGED AUDI SOLD PADS THAT GOT WET EASILY AND RETAINED MOISTURE, CAUSING SEVERE BRAKING LOSS. AUDI AMERICA REFUSES TO ACKNOWLEDGE PROBLEM AND OWNERS HAVE HAD TO HAVE THE PADS REPLACED AT THEIR OWN COST! WHAT IS IT GOING TO TAKE..A BRAKE RELATED DEATH AND A LAWSUIT? *TR
BEEN A NOT SO PROUD OWNER OF A AUDI A4 2004 , AND HAVING A NUMBER OF DOCUMENTS ISSUES WITH MY CALL AND RECEIVING POOR SERVICE FROM MY LOCAL DEALER. AT APPROXIMATELY 3000 MILES BEFORE MY WARRANTY EXPIRED THE FRONT BRAKES STARTS TO MAKE GRINDING NOSE AFTER TAKING TO THE DEALER THE DEALER INFORMED ME THAT THE BRAKES NEEDED TO BE REPLACED INCLUDING THE ROUTERS (WHICH BY THE WAY THEY NEVER REPLACED UNDER THE MAINTENANCE DESPITE THE FACT I REQUESTED THEM TO CHECK MY BRAKES EVERY TIME I TOOK THE CAR FOR SERVICE AND THEY KEPT TELLING MY THE BRAKES WERE GOOD). AT THIS TIME THEY INFORMED ME THAT I HAD TO PAY $320.00 TO HAVE MY BRAKES REPLACED. WHAT I DON'T UNDERSTAND IS MY DID THE DEALER WAITED FOR THE ROUTER TO THE FULL DAMAGED BEFORE REPLACING THEM. *TR
TL*THE CONTACT OWNS A 2004 AUDI A4. WHILE ATTEMPTING TO PRESS DOWN THE EMERGENCY BRAKE, THE BRAKE LIGHT REMAINED ILLUMINATED ON THE INSTRUMENT PANEL. THE CONTACT TOOK THE VEHICLE TO THE DEALER AND THEY STATED THAT IT WOULD COST $5,000 TO REPAIR. THE DEALER WOULD NOT IDENTIFY WHAT CAUSED THE FAILURE. THE VEHICLE WAS NOT REPAIRED AND THE BRAKE LIGHT REMAINS ILLUMINATED. THE CONTACT FILED A COMPLAINT WITH THE MANUFACTURER. THE FAILURE MILEAGE WAS 48,000 AND CURRENT MILEAGE WAS 49,000. UPDATED 01/03/08. *LJ UPDATED 12/31/07
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 25, 2026