I own a 2005 s4 cabriolet, just recently on start up only, a noise that sound like the timing chain grinding happens, goes away afer a second, any ideas, the car is full audi serviced and warrenty, also runs like a dream.
If it's still under warranty, surely the best thing you can do is to just return it to the Dealer and get them to look at it, whilst they give you a loan car for your troubles.
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