2008 Audi A3 Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 2008 Audi A3

2008 Audi A3 Problems

Decreased Power and Fuel Economy from Carbon Buildup

The 2006 - 2017 Audi A3 2.0FSI, 2.0TFSI, and 3.2FSI are subject to carbon buildup inside the engine causing power loss, check engine light, engine codes P0300, P0301, P0302, P0303, P0304, and a rough idle. In normal vehicles, the engine is cleaned by the gasoline flowing through, however, these cars use direct injection so gasoline is rerouted away from common carbon buildup areas. 

The solution is to remove the intake manifold and professionally clean the intake manifold, intake ports on the cylinder head, and the intake valves. This may need to be done in as few as 20,000 miles. 

Loss of Power Due to Torn Rubber Valve

The Audi A3 2.0T FSI and Audi A3 2.0TFSI engine looses power if the turbocharging system has a leak. The most common turbo boost leak is a torn rubber diaphragm on the diverter valve, which is intended to open only if pressure gets too high. Common symptoms are increased turbo noise when letting off of the gas pedal, power loss, and engine code P0234.

If there is a turbocharging system leak, the system will need to be inspected, and the defective seals and/or valve will require replacement. 

Rattling From the Transmission May Be Heard When Engine is Cold

The flywheel for the 2006-2008 Audi A3 2.0L Turbo is a non-conventional "Dual Mass" flywheel. It is known to make light rattling noise when the engine is cold, and should subside once the engine temperature raises. If the rattle doesn't go away when the engine warms, the flywheel may have failed.

If the dual mass flywheel has failed, the only solution is to replace the flywheel.

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2008 Audi A3 Questions

Water leak in spare tyre well (1 answer)

Hi guys, I own an Audi A3 3 door Hatchback. When it rains, the spare tyre well fills up with water, a lot of water actually. All the seals around the hatch itself look to be in good condition and there is no rust, the car does have a sunroof, although not sure if that matters. Any help or advice ...

Out of the blue, gas pedal to the floor, car loses speed,emission light on, why? (1 answer)

Car loses power even down gas pedal is at very bottom, turned off car then back on and the emission light comes on. Any suggestions on what might be and cost to repair?

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2008 Audi A3 Recalls

Driver's Frontal Air Bag Inflator Ruptures And Sprays Metal Fragments

The driver's frontal air bag inflator may deploy the air bag with excessive pressure, resulting in the inflator rupturing and causing metal debris to be sprayed onto vehicle occupants. Dealers will replace the driver's frontal air bag inflator free of charge to resolve the concern.

Potential Fuel Leak During Extreme Driving Conditions

Under extreme driving conditions, fuel can leak from the fuel tank vent valve. The internal spring may be too weak to hold the valve closed. Any fuel leak increases the risk of a fire. Dealers will replace the affected valve with an improved design. The recall is expected to begin by November 16, 2009. The Audi recall number is 20Q3/J3.

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2008 Audi A3 Reviews

Fantastic car, the best looking hatchback out there. Body style is not for everyone, but very functional. The transmission, as many have noted, can be jerky when starting, or during heavy traffic, but boy can it move when opened up. The sport mode holds high RPMs and engages neutral for cornering, quite a thrill on highways. Fantastic lighting package, the dynamic HID's with foglight combo ...

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