Audi A4 running louder than normal
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Audi A4 running louder than normal
2009 Audi A4 2.0T running louder than normal. RPM’s normal, and car seems to be running normal but has started making a loud humming noise that gets louder the faster you go. Had oil changed a month ago and it says the oil is full. Not really sure the cause for this sudden noise, should I have the car looked at? Please help.
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