Skip to content
Transmission and drivetrainPart report

2004 Audi S4 Transmission and drivetrain Problems

Complaints
5about this part
Share
17%of 29 total for the year
Median mileage
55,000miles
Trend
Not enough dataFewer than 15 complaints, too few for a reliable trend.

NHTSA recorded 5 complaints about the transmission and drivetrain of the 2004 Audi S4, 17% of the 29 complaints for this model year. Where a mileage was given, the median is 55,000 miles.

Fewer than 15 complaints name this part, so treat the figures as a rough indication only.

Example complaints

Selected from NHTSA records; personal details are removed. They are consumer reports, not findings.

“I have a 2004 S4 which crunches when shifting into 2nd and 3rd gear. Audi replaced the synchros but the problem still persists. I have returned to the dealership numerous times but they keep telling me its normal. The crunches occurs everytime I drive it and also make it difficult to get into gear. The vehicles rpms will sometimes stick, keeping the vehicle moving when not under acceleration.”

NHTSA complaint #10272456, filed 2009-05, 60,000 miles

“I have a 2004 Audi S4 that is slipping out of second gear... It is a known second gear synchro problem that Audi is ignoring. I have called Audi of america, and they admit there is an issue but still offer no help. The issue started at 55,000 miles which is 5k miles out of warranty.”

NHTSA complaint #10261380, filed 2009-03, 55,000 miles

“I own a 2004, Audi, S4 which I purchased used from my brother, who bought it new. I bought this car from him with 45,000 miles on it. At 55,000 miles the car had catastrophic engine failure. 5,000 miles over the warranty period! The mechanic that is repairing the damage said if one more component would have broke it could have caused me to lose control of the vehicle and crash. The engine and transmission had to be removed from the vehicle to be repaired. I contacted Audi of u.s.a. To,1. Alert them of this problem and possible safety issue, 2. …”

NHTSA complaint #10443757, filed 2012-01, 55,000 miles

“Audi claims that the timing chain on those vehicles are lifetime and does not need to be service. Unfortunate the timing change tensioners are made of plastic which the wear out at about 50k miles, causing a start up rattle and eventually engine explosion from the chain coming of the guides and destroying the entire engine and causing a massive accident at high speed. Hundreds of problems like this one are reported online from thousands of people even youtube videos. …”

NHTSA complaint #10622265, filed 2014-08, 80,000 miles

Related service bulletins

Transmission and drivetrain: other model years

YearComplaintsShare of year
2018114%
2014318%
2013927%
20121464%
20112285%
20104270%
2007215%
200613%
200512%
2004517%
200021%
1992120%

Other parts of the 2004 Audi S4

Engine cooling
12 complaints
Engine
3 complaints
Exterior lighting
3 complaints
Visibility (wipers, defrost, mirrors)
3 complaints
Electrical system
2 complaints
Steering
2 complaints
Air bags
1 complaints
Brakes
1 complaints
Other or unknown
1 complaints
Seat belts
1 complaints
Body and structure
1 complaints
Tires
1 complaints

← All problems reported for the 2004 Audi S4

About this data. Data from NHTSA (ODI) complaints, recalls, TSBs and investigations, updated Oct 30, 2026. Complaints are unverified consumer reports and may be duplicated or inaccurate.

To check a specific vehicle for open recalls, use its VIN at nhtsa.gov/recalls. Methodology