2004 Audi A4: Reliability Data

Source: NHTSA — 225 complaints
225
Total Complaints
59,120mi
Median Mileage
FUEL SYSTEM, GASOLINE
Top Issue
10
Crash Reports

When Do Complaints Happen?

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

36,450 25th Percentile
59,120 Median Mileage
86,000 75th Percentile

What Fails?

Most reported component issues from NHTSA complaints.

FUEL SYSTEM, GASOLINE
35
AIR BAGS
18
EXTERIOR LIGHTING
14
ELECTRICAL SYSTEM
12
VEHICLE SPEED CONTROL
12
FUEL SYSTEM, GASOLINE:DELIVERY:FUEL PUMP
12
TIRES
9
ENGINE AND ENGINE COOLING
7
TIRES:SIDEWALL
7
ENGINE AND ENGINE COOLING:ENGINE
7

Severity Assessment

10
Crashes
6
Fires
7
Injuries
0
Deaths

Sample Complaint Reports

"WHILE CHANGING THE PASSENGER SIDE TIRE, THE JACK COLLAPSED AND DAMAGED THE ROTOR. PLEASE PROVIDE FURTHER INFORMATION. *JB"
"AFTER 4,500 MILES, THE FRONT TIRE DEVELOPED A BUBBLE ON THE PASSENGER SIDE. *AK THE TIRE WAS THEN REPLACED WITH AN IDENTICAL ONE. AFTER 1500K MILES, THAT TIRE DEVELOPED THE SAME BUBBLE. *SC *JB"
"VEHICLE LURCHED OR ACCELERATED UPON FINAL PARKING NEAR A STOP WITH FOOT OFF ACCELERATOR PEDAL AND ON BRAKE PEDAL. CAR ACCELERATED FOR MORE THAN HALF A MILE AT 80 MPH. CONSUMER WAS ABLE TO CONTROL VEHICLE AND PUT IT IN NEUTRAL. DEALER INDICATED VEHICLE OPERATED AS DESIGNED BY THE MANUFACTURER, TH..."

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