Audi S4 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Audi S4

Select your Audi S4's year to get more detailed information
Select your Audi S4's year to get more detailed information:

Audi S4 Problems

Overheating Due to Failing Thermostat

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.

Oil Leak From Transmission Output Shaft Seal

A fluid leak may develop from the propeller shaft seal on the rear of the transmission. Our technicians tell us that replacing the seal will commonly correct this concern.

Oil Leaks From Camshaft Chain Tensioner and Valve Cover Gaskets

Engine oil leaks are common from the valve cover gaskets and camshaft chain tensioner gasket.

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Audi S4 Questions

2004 Audi S4 CEL too rich (1 answer)

My 2004 Audi S4 4.2L CEL came on this weekend the codes are p0174 and p0175 system to rich bank 1 and 2. Check air filter and it looks clean, could this be a Mass airflow sensor? What should be my plan of attach or simply just take it into the shop?

Cheers,

S4 timing chain (1 answer)

Repair costs

I am buying a used car, what are the major issue I should look for.it has 110k thanks (2 answers)

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Audi S4 Recalls

Potential Fuel Leak

The fuel rail is a tube that carries fuel to the fuel injectors. The fuel rail may leak, increasing the risk of a fire. Dealers will replace the affected fuel rail and corresponding seals to correct this concern.

Front Air Bags May Not Deploy In A Crash

In a crash where the first impact deploys the side air bags and a second impact occurs in the front of the vehicle, the front air bags may not deploy. Dealers will update the air bag control unit software free of charge to correct the concern.

Recall 05V096000
ON CERTAIN PASSENGER VEHICLES, THERE IS A POSSIBILITY OF XENON HEADLAMP COATING DEGRADATION OVER TIME. THE LUMINOUS TRANSMITTANCE OF THE HEADLAMP MAY DECREASE OVER A PERIOD OF TIME.

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Audi S4 Reviews

I have owned my 01 S4 Avant 6 speed for 5 years now. I bought it form the original owner with 120K miles on it with service records. My wife drives it daily and has 205K on it. The car still has original clutch, head gaskets, and turbos. Most repairs have been general maintance, but some repairs are costly. Some parts such as EGT sensors, O2 sensors and center driveshaft carrier bearing failure...
Bought my 2001 S4 new in March 2002. It has 149,000 miles now. It has been an excellent car. It is a 6 speed manual with the original clutch. Wondering how much longer the clutch will last. It does not slip but am thinking it must be getting close to the end of its useful life. Am wondering if I should sell it while it runs well or keep it and eventually replace the clutch. Any advice o...
I had a 2005.5 Audi S4. I really enjoyed driving it until 104,000 miles when the timing chain tensioner went out and audi wanted to replace the engine for $18,000. It was our 4th audi. Never again. Will always drive american from here on out. Could not work with the dealer or Audi. The vehicle was well maintained and even the Audi tech said the motor was in great shape. I returned the audi back...

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