2008 Audi A8 Quattro Repair and Maintenance
A guide to problems, costs, maintenance and repair for your 2008 Audi A8 Quattro
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2008 Audi A8 Quattro ProblemsCheck Engine Light and/or Engine Overheating Due to Failed Thermostat
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.
The 2007-2017 Audi A8 with FSI/TFSI, including the W12 are direct injection engines. These engines 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. In normal engines, the engine is cleaned by the gasoline flowing through the injectors and into the intake system, however, the A8 uses direct injection so gasoline does not flow through 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.
2008 Audi A8 Quattro QuestionsParking 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.
Parking Brake Warning Light came on without warning. Stays lit even though parking brake motor appears to be engaging and disengaging brake when activated.
2008 Audi A8 Quattro RecallsSunroof 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.