I have a 2002 new beetle and have noticed it pinging a lot. Not always when rpm's are low. Any ideas as to why?
Try some good injector cleaner like Techron and the next grade up in fuel octane for a couple of tanks, if that helps then try going back to your regular fuel, and then make sure you are running top tier fuels in the tank. I use Techron in every tank if I can't get Chevron or Texaco fuels.
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