Audi A8 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Audi A8 Quattro

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Audi A8 Quattro Problems

Decreased Power and Fuel Economy from Carbon Buildup

The 2007-2017 Audi A8 with FSI/TFSI, including the W12, is subject to carbon buildup inside the engine causing power loss, check engine light, 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. 

Possible engine codes include: P0300P0301P0302P0303P0304, P0305, P0306, P0307, P0308, P0309, P0310, P0311, P0312.

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. 

Various Probelms Caused by Clogged Plenum Tray Drain

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 can lead to major problems. Our technicians recommend keeping the tray clear of leaves, pine needles, and other debris.

Check Engine Light and/or Engine Overheating Due to Failed Thermostat

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

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Audi A8 Quattro Questions

Parking Brake warning light. Pushrod: doyou think it is as simple as brake fluid (1 answer)

Just need brake fluid ? Really hope it's that simple.

How can parking brake warning light problem be checked out. Vehicle moves freely (1 answer)

Parking Brake Warning Light came on without warning. Stays lit even though parking brake motor appears to be engaging and disengaging brake when activated.

Not getting fuel (1 answer)

Car stalled and wasn't able to restart the car. Checked the fuse that wasn't it.

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Audi A8 Quattro Recalls

Coolant Leaks Into Engine Control Module Causing Stall Or Loss Of Power

A coolant valve may leak onto the engine control module and may cause the engine to stall or lose power. Dealers will replace the coolant valve and inspect for coolant that has leaked through the electrical connector of the engine control module free of charge to resolve the concern.

Sunroof Glass Is Not Secured To The Sunroof Frame

The sunroof glass may not be secured properly to the sunroof frame. Dealers will install additional adhesive between the sunroof glass and frame free of charge to resolve the concern.

The Sun Roof Glass Can Shatter

Vehicles equipped with a standard sunroof glass panel are being recalled because the glass can break without warning. Dealers will replace the sunroof glass on affected vehicles to correct this concern. 

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Audi A8 Quattro Reviews

did you fix light. "on&off"
The Audi company should improve the resistance on gear box. Because the most problem on this is gear. You can find Audi almost everywhere in the world but, there's no accessories, and good cars parked due to the same problem.

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