One problem related to engine exhaust system has been reported for the 2004 Audi A6. The most recently reported issues are listed below. Please also check out the statistics and reliability analysis of the 2004 Audi A6 based on all problems reported for the 2004 A6.
I am writing about my 2004 A6 avant, which has 78,000 miles. At a recent oil service at an independent garage, it was suggested that there was a problem with the catalytic converters. Exhaust was leaking from both sides, I was told. I took the car to my Audi dealer, where they checked the exhaust system. The mechanic who examined the car concurred that the catalytic converters needed to be replaced. Under a federally mandated warranty, the catalytic converters are covered for eight years or 80,000 miles. Yet the dealer has declined to cover replacement because the "check engine" light was not on. I was given a repair estimate of $2,400.
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| Engine Exhaust System problems |