2000 Audi A4: Reliability Data

Source: NHTSA — 115 complaints
115
Total Complaints
62,000mi
Median Mileage
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
Top Issue
7
Crash Reports

When Do Complaints Happen?

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

46,000 25th Percentile
62,000 Median Mileage
87,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP
27
SERVICE BRAKES, HYDRAULIC:ANTILOCK/TRACTION CONTROL/ELECTRONIC LIMITED SLIP:CONTROL UNIT/MODULE
9
SERVICE BRAKES, HYDRAULIC
6
ELECTRICAL SYSTEM
5
ENGINE AND ENGINE COOLING:ENGINE
5
ENGINE AND ENGINE COOLING
4
VISIBILITY:POWER WINDOW DEVICES AND CONTROLS
4
SERVICE BRAKES, ELECTRIC
3
ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL
3
SERVICE BRAKES, HYDRAULIC:FOUNDATION COMPONENTS:DISC
3

Severity Assessment

7
Crashes
4
Fires
4
Injuries
0
Deaths

Sample Complaint Reports

"BRAKE FAILURE OCCURRED UNDER WET CONDITIONS. BRAKES WERE APPLIED AT 30 MPH, BUT DID NOT ENGAGE FOR A FEW SECONDS (3). BRAKES "CHATTERED" BEFORE CAR EVENTUALLY STOPPED, AND LUCKILY THERE WAS CLEAR TRAFFIC AHEAD OF ME. *AK"
"WHEN DRIVING IN RAINY CONDITIONS BRAKESFAILED TO ENGAGE FOR SEVERAL SECONDS AFTER DEPRESSING PEDAL, CAUSING A VERY DANGEROUS DELAY. *AK"
"BRAKE ACTION IS DELAYED WHEN THERE IS RAIN. NLM"

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