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Most reported Audi problems

 

Verified for the Audi 100

The water pump may fail resulting in engine overheating and possible timing belt damage. Overheating and/or timing belt failure can result in very expensive engine repairs. As a precaution, it is recommended to inspect the timing belt and water pump at regular intervals.

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Verified for the Audi 100

An External oil leak may develop from the valley pan gasket (under the intake manifold) and/or the head gasket.

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Verified for the Audi 90

An External oil leak may develop from the valley pan gasket (under the intake manifold) and/or the head gasket.

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Verified for the Audi A4 Quattro

An External oil leak may develop from the valley pan gasket (under the intake manifold) and/or the head gasket.

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Verified for the Audi Cabriolet

Premature wear in various multi-link suspension components can cause noises that are difficult to diagnose. Worn suspension parts can also cause uneven tire wear and create steering alignment problems.

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Verified for the Audi A8

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

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Verified for the Audi A6 Quattro

Fuel quality must be maintained to avoid engine misfire problems; the misfires may cause the Check Engine Light to illuminate.

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Verified for the Audi A6 Quattro
Oil leaks from the camshaft drive pulleys and variable valve timing hydraulics are common. If the variable valve timing hydraulics is leaking, the Check Engine Light may illuminate from inaccurate valve timing.
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Verified for the Audi S4

The Cabriolet convertible top mechanism can fail due to hydraulic fluid leaks. The fluid reservoir is a common failure.

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Verified for the Audi A3

A no start condition may occur with a fuel pressure sensor fault code is stored in the powertrain control module (PCM). This problem is commonly caused by a faulty fuel pressure sensor which should be replaced.

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Reported by bestdmitry and 2 others for the Audi A6 Quattro

Break light switch becomes inoperable, causing ABS and No traction control light come on, causing brake lights to stay on even with the engine shut off and car locked (as if someone is stepping on the brake pedal). Problem corrected by replacing the brake light switch (located in the driver's side compartment, above the brake pedal).

DIY links:
http://www.2carpros.com/questions/audi-a6-2003-audi-a6-changing-the-brake-light-switch

http:/...

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Verified for the Audi 100

Problems with air leaks and the fuel injection may cause starting difficulties.

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Verified for the Audi A8 Quattro
Oil leaks can develop in the crankcase ventilation hoses, in between the cylinder banks.
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Verified for the Audi A8

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.

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Verified for the Audi A4

Engine oil leaks are common from the valve cover gaskets and camshaft chain tensioner gasket.

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