car had been making a siren like sound and sometimes a rattling sound between 20 and 40 mph. Trans mechanic said vacuum leak or turbos gone bad. Mechanic said turbos don't go bad bring it in to check it. Today the siren noise stopped for a minute and when I accelerated huge clouds of smoke came from the rear of the car almost covering the entire street behind me. I could smell oil and and the muffler was covered wet with oil.Now the mechanic says the engine is blown. Engine,turbos, or ?
Audi Q&A
Ask Your Question2000 Audi A6 Quattro Question: Large amount of white smoke from exhaust or under body;oil leaking on the ground
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