I have noticed a knocking sound coming from my Audi A7's engine. What could be causing this and how can I fix it?
ReplyThe most common cause of engine knocking in an Audi A7 is low-octane fuel. Try filling up with a higher octane fuel and see if the knocking stops.
Another possible cause is carbon build-up in the engine. Have a mechanic check and clean the engine to eliminate this issue.
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