I've noticed that my Audi A4 makes a loud knocking sound when I accelerate, especially on the highway. What could be causing this issue? Is it something I should be concerned about?
ReplyThe knocking sound could be caused by a variety of things such as a faulty engine mount, worn out piston rings, or a problem with the fuel injectors. It's important to have it checked by a mechanic as soon as possible to prevent further damage.
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