Audi 100 Quattro Repair and Maintenance

A guide to problems, costs, maintenance and repair for your Audi 100 Quattro

Audi 100 Quattro Problems

Oil Leaks at Valley Pan Gasket and Head Gasket are Common

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

Bushings May Deteriorate With Age and Cause Noise

Various bushings—located around the subframe, suspension, and steering—deteriorate with age. A clunking noise when driving over bumps, accelerating, or stopping may be a sign of worn bushings.

Inspect CV Boots and Joints at Each Service

Our technicians recommend having the constant velocity (CV) boots and CV joints inspected at each service. Servicing torn CV boots early can prevent the need to replace the CV half shaft or CV joint.

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Audi 100 Quattro Questions

Fuel Filter location (1 answer)

I have spongy breaks. Is it the master cylinder or rear calipers? (1 answer)

I have spongy breaks and have to press almost to the floor to stop. The emergency break doesn't work either. I've had two mechanics tell me the rear breaks are out. One says replacing the master cylinder will fix it. The other says the rear calipers need to be replaced. What is the most l...

I have a water leak into the drivers footwell, (1 answer)

Windscreen and door seals been checked, may be the fuse box seal, would the water leak affect the starting, I haven't had a problem but the garage taken to for MOT had her stood out in wet weather and now she has a starting problem which was not there when I took her to the garage, because pa...

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