Table 1 shows nine common engine and engine cooling related problems of the 1999 Audi A6. The number one most common problem is related to the catalytic convertor (three problems). The second most common problem is related to the engine (three problems).
1996 Audi A6 customer states that the catalytic converter has been replaced twice and still having problems* the consumer was informed that the after market muffler he purchased didn't work well with Audi's and it was recommended that the consumer only use a factory catalytic converter. Read details...
Unintended acceleration -- car accelerated rapidly. Would not slow even when driver's foot was not on the gas. Engine revved rapidly and would not return to normal idle speed. Read details...
1999 Audi A6 avant with serious safety issues. Consumer would like Audi to pay for the last 4 repairs that needed to be done. Consumer has had some serious safety issues with this vehicle and states that it is a lemon. Read details...