2004 Audi S4: Reliability Data

Source: NHTSA — 37 complaints
37
Total Complaints
54,500mi
Median Mileage
ENGINE AND ENGINE COOLING:ENGINE
Top Issue
0
Crash Reports

When Do Complaints Happen?

Distribution of NHTSA complaints by vehicle mileage at time of report.

32,608 25th Percentile
54,500 Median Mileage
79,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE AND ENGINE COOLING:ENGINE
8
POWER TRAIN:MANUAL TRANSMISSION
3
EXTERIOR LIGHTING
3
ENGINE AND ENGINE COOLING
3
ENGINE
3
POWER TRAIN
2
ELECTRICAL SYSTEM
2
VISIBILITY
2
STEERING:HYDRAULIC POWER ASSIST:PUMP
1
AIR BAGS
1

Severity Assessment

0
Crashes
2
Fires
0
Injuries
0
Deaths

Sample Complaint Reports

"POWER COUPLING ON POWER STEERING MOTOR FAILED RESULTING IN LOSS OF STEERING AS I WAS DRIVING....DEALER LATER INFORMED ME THAT THIS WAS A DEFECT THAT HAD BEEN CORRECTED BUT I DID NOT SEE A RECALL POSTED. *NM"
"I HAVE AN AUDI S4 CONVERTIBLE THAT HAS BEEN TO THE DEALERSHIP MULTIPLE TIMES FOR THE SAME SAFETY ISSUE. THE AIRBAG SYSTEM HAS BEEN DEFECTIVE AND THE REPAIRS DO NOT SEEM TO BE TAKING HOLD WHEN THEY DO THEM. SO FAR THERE FORTUNATELY HAS NOT BEEN A NEED TO USE THE AIRBAG SYSTEM, HOWEVER ITS UNAVAILAB..."
"TL*THE CONTACT OWNS A 2004 AUDI S4. WHEN THE WEATHER WAS COLD AND THE CONTACT TOOK HIS FOOT OFF OF THE ACCELERATOR, THE VEHICLE WOULD NOT SLOW DOWN. THE DEALER COULD NOT DUPLICATE THE PROBLEM. THE CURRENT MILEAGE WAS ABOUT 75,000 MILES AND THE FAILURE MILEAGE WAS LESS THAN 5,000 MILES. UPDATED 01/24..."

Source: NHTSA ODI Complaints Database. Names and identifying details omitted.

Data source: View this vehicle on NHTSA.gov | NHTSA ODI Complaints Database. Public domain.

Methodology: Complaint counts and mileage distributions are computed directly from consumer-reported NHTSA complaints. This data represents reported issues, not failure rates — vehicles without complaints are not represented. Full methodology.

Data through: 2026-03-28