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Audi S4 Problems

Find the most common issues based on Audi S4 owner complaints.
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Most Common Audi S4 Problems

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.
Our technicians recommend having the constant velocity (CV) boots and CV joints inspected at each service. Servicing torn CV boots early can prevent the need to replace the CV half shaft or CV joint.
A problem with the torque converter can cause the Check Engine Light to illuminate.
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0 Known Audi S4 Brakes Problems

3 Known Audi S4 Drive Train Problems

Our technicians recommend having the constant velocity (CV) boots and CV joints inspected at each service. Servicing torn CV boots early can prevent the need to replace the CV half shaft or CV joint.
A problem with the torque converter can cause the Check Engine Light to illuminate.
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.

1 Known Audi S4 Electrical & Lights Problem

Erratic turn signal operation can be a result of a failing turn signal flasher relay which will require replacement.

6 Known Audi S4 Engine Problems

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.
Engine oil leaks are common from the valve cover gaskets and camshaft chain tensioner gasket.
The 2010-2017 Audi S4 with the 3.0TFSI direct injection engine are subject to carbon buildup in the intake system which can cause power loss, OBD codes and a check engine light, and a rough idle. I...

3 Known Audi S4 Exhaust & Emissions Problems

Popping sounds from the rear of the vehicle may be heard moments after starting the engine, or when slowing to a stop. This noise is from the leak detection pump filling the fuel tank with air, and...
An ignition coil or spark plug may fail unexpectedly resulting in an engine misfire and possible illumination of the Check Engine Light.
Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.

0 Known Audi S4 Heating & Air Conditioning Problems

0 Known Audi S4 Maintenance Problems

2 Known Audi S4 Miscellaneous Problems

Clogged drains can allow rainwater to accumulate in the plenum tray (at the base of the windshield). The water may leak into the vehicle's interior, brake booster, or electrical components, which c...
The Cabriolet convertible top mechanism can fail due to hydraulic fluid leaks. The fluid reservoir is a common failure.

2 Known Audi S4 Suspension & Steering Problems

Various bushings—located around the subframe, suspension, and steering—deteriorate with age. A clunking noise when driving over bumps, accelerating, or stopping may be a sign of worn bu...
Premature wear in various multi-link suspension components can cause noises that are difficult to diagnose. Worn suspension parts can also cause uneven tire wear and create steering alignment probl...

17
Known Audi S4 Problems & Complaints

The thermostat may erratically stick open or closed. The can result in illumination of the Check Engine Light and/or engine overheating.
Clogged drains can allow rainwater to accumulate in the plenum tray (at the base of the windshield). The water may leak into the vehicle's interior, brake booster, or electrical components, which c...
A problem with the torque converter can cause the Check Engine Light to illuminate.
Various bushings—located around the subframe, suspension, and steering—deteriorate with age. A clunking noise when driving over bumps, accelerating, or stopping may be a sign of worn bu...
Erratic turn signal operation can be a result of a failing turn signal flasher relay which will require replacement.
The water pump may fail resulting in engine overheating and possible timing belt damage. Overheating and/or timing belt failure can result in very expensive engine repairs. As a precaution, it is ...
Popping sounds from the rear of the vehicle may be heard moments after starting the engine, or when slowing to a stop. This noise is from the leak detection pump filling the fuel tank with air, and...
Our technicians recommend having the constant velocity (CV) boots and CV joints inspected at each service. Servicing torn CV boots early can prevent the need to replace the CV half shaft or CV joint.
Engine oil leaks are common from the valve cover gaskets and camshaft chain tensioner gasket.
Vacuum leaks, oxygen sensor failure, and catalytic converter efficiency faults can cause the Check Engine Light to illuminate.
An ignition coil or spark plug may fail unexpectedly resulting in an engine misfire and possible illumination of the Check Engine Light.
The 2007-2008 Audi RS4 uses the 4.2FSI direct injection engine. This engine is subject to carbon buildup in the intake system which can cause power loss, OBD codes and a check engine light, and a r...
The 2010-2017 Audi S4 with the 3.0TFSI direct injection engine are subject to carbon buildup in the intake system which can cause power loss, OBD codes and a check engine light, and a rough idle. I...
Premature wear in various multi-link suspension components can cause noises that are difficult to diagnose. Worn suspension parts can also cause uneven tire wear and create steering alignment probl...
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.
Get a Repair Estimate
Guaranteed by certified locations nationwide. Learn more
RepairPal estimates are guaranteed at over 1,700 quality certified locations nationwide. Learn more
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