Audi A4 owners have reported 2 problems related to brake hoses, lines/piping, and fittings (under the service brakes category). The most recently reported issues are listed below. Also please check out the statistics and reliability analysis of Audi A4 based on all problems reported for the A4.
1) failure of front left (driver side) hydraulic brake hose at caliper end at inboard side of hose strain relief. The damage location appears to be where hose is subject to maximum stress and flexing when front wheels turn. Further inspection revealed concealed damage to right (passenger) front brake hose at the same location. 2) consequence was loss of all hydraulic braking when hose burst, resulting in minor accident. Damage to vehicles was minor because of good fortune to have failure at low speed--no injuries resulted. 3) front hydraulic brake hoses were replaced with new oem hoses supplied by Audi dealer. Because both hoses exhibited similar wear, other Audi A4 vehicles 10 years old and/or with 100,000+ miles may be subject to similar front brake hose failures.
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all problems of the 1997 Audi A4
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While backing out of driveway there were no brakes. Vehicle was towed to automobile shop, and mechanic verified that wheel itself rubbed brake line every time vehicle was turned to left, wearing a hole in line, and causing brake failure.
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all problems of the 1998 Audi A4
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