Consumer Guide's® Auto Editors have scoured repair bulletins and questioned mechanics to search for commonly occurring problems for a particular vehicle. In some cases we also give possible manufacturer-suggested solutions. In many instances these trouble spots are Technical Service Bulletins posted by the manufacturer, however, we have our own expert looking at additional vehicle problems.

Audio system: If the CD player and rear defogger are operated at the same time, a whining noise may come from the audio speakers. This requires a filter on the wiring harness. (2000)

Coolant leak: Coolant leaks from the thermostat housing on the VR6 engine due to bad O-ring or cracked housing. (2002-06)

Engine noise: Engine may groan or howl due to a problem with the charge pressure valve for the turbo system. A revised valve is available. (2000)

Paint/body: Hoists or floor jacks may damage early production models' sill panels. Later models are built with hoist lift pads that can be retrofitted. (2000)

Rough idle: Dirty throttle body bore and throttle control module commonly cause rough or low idle. (2000-01)

Rough idle: Backfires dislodge the idle control damper from the rear of the engine causing rough, or no idle due to faulty plugs or wires on vehicles equipped with the VR6 engine. (1992-04)

Suspension problems: To improve handling and reduce the risk of vehicle skid, front stabilizers (FWD) or front and rear stabilizers (Quattro) are being replaced. (2000)

This table lists costs of likely repairs for comparison with other vehicles. The dollar amount includes the cost of the part(s) and labor (based on $50 per hour) for the typical repair without extras or add-ons. Like the pricing information, replacement costs can vary widely depending on region. Expect charges at a new-car dealership to be slightly higher.

2000: In high-speed turns or abrupt lane-change maneuvers at speeds substantially above posted limits, and depending upon road conditions, precise steering response may be demanded to retain directional stability. Dealers will replace front stabilizers in front-drive cars, and front/rear stabilizers in those equipped with all-wheel drive. A modified control arm will be installed, together with firmer front/rear shock absorbers and a rear spoiler.

2000: Small section of fuel-line assembly on small number of cars could have been damaged during production; if so, fuel could leak.

2000-01 Quattro: Rear-track control-arm-mounting bushing and bolt could corrode leading to loss of vehicle control.