2001 Audi A4: Reliability Data

Source: NHTSA — 153 complaints
153
Total Complaints
60,007mi
Median Mileage
ENGINE AND ENGINE COOLING:ENGINE
Top Issue
5
Crash Reports

When Do Complaints Happen?

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

38,375 25th Percentile
60,007 Median Mileage
85,788 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

ENGINE AND ENGINE COOLING:ENGINE
14
ELECTRICAL SYSTEM:IGNITION
12
SERVICE BRAKES, HYDRAULIC
9
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
9
ELECTRICAL SYSTEM
8
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
8
AIR BAGS
8
ENGINE AND ENGINE COOLING
7
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC:PADS
5
ENGINE AND ENGINE COOLING:ENGINE:GASOLINE
4

Severity Assessment

5
Crashes
9
Fires
1
Injuries
0
Deaths

Sample Complaint Reports

"BRAKING SYSTEM DOES NOT INITIALLY APPLY ANY MEANINGFUL STOPPING POWER WHEN DRIVING IN WET CONDITIONS. THIS RESULTS IN A 1-2 SECOND DELAY IN ACTUAL SLOWING WHEN APPLYING BRAKES IN THE WET. THIS SITUATION HAS OCCURRED WITH BOTH STOCK AND AFTERMARKET WHEELS AND BRAKE PADS AND LIGHT AS WELL AS HEAVY WET..."
"BRAKING SYSTEM DOES NOT INITIALLY APPLY ANY MEANINGFUL STOPPING POWER WHEN DRIVING IN WET CONDITIONS. THIS RESULTS IN A 1-2 SECOND DELAY IN ACTUAL SLOWING WHEN APPLYING BRAKES IN THE WET. THIS SITUATION HAS OCCURRED WITH BOTH STOCK AND AFTERMARKET WHEELS AND BRAKE PADS AND LIGHT AS WELL AS HEAVY WET..."
"WHILE DRIVING TRANSMISSION DOWNSHIFTED AND JERKED FORWARD. DEALER IS INSPECTING VEHICLE.*AK"

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