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What causes the Audi A4 to have a rough idle?

I have an Audi A4 that has been experiencing a rough idle lately. What could be causing this issue and how can I fix it?

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Answers (2)

J

One possible cause of a rough idle in an Audi A4 is a dirty or faulty mass airflow sensor. Try cleaning or replacing it to see if it helps.

E

Another common cause is a clogged fuel filter. Try replacing it to see if it improves your idle.

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