1999 Audi A8 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your 1999 Audi A8 Quattro

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

A problem with the torque converter can cause the Check Engine Light to illuminate.

See More Problems 6

As many others on this site, our Audi has started filling up with huge amounts of water when it rains....and dumping it on our feet and out the rear a/c vents etc. The plenum tray is clear....but we have been unable to locate the plug to release the water that is sloshing and gurgling around con...

The car has been leaking oil ever since we had it changed. I know that in some cars the plug has a compression seal that's a one time use. Is this the case with the Audi?

1997-1999 audi a8 quattro
4.2 iat sensor
ecu

See More Questions 11

VOLKSWAGEN IS RECALLING 13,900 MY 1996-2003 AUDI A8 VEHICLES EQUIPPED WITH A 5-SPEED AUTOMATIC TRANSMISSION. THE LOCKING CABLE MAY MOVE OUT OF POSITION OVER TIME. WITH THE LOCKING CABLE OUT OF POSITION, THE SHIFTER CAN BE MOVED OUT OF THE "PARK" POSITION EVEN IF THE IGNITION KEY IS NOT IN THE I...

See More Recalls 1

Bought my "dream car" from a dealer in Cleveland. Two weeks after, the transmission needed to be rebuilt (later found out that the tranny in the car was a refurbished one from some time ago). This is a Z type tranny which I now know is one of the most complicated trannys out there. One year after rebuild ($4200), the SAME issues happened again. Transmission shop now says the sensors inside are ...

See More Reviews 1