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Why is the Audi A6's Fuel Efficiency Decreasing?

I've noticed that my Audi A6 has been using more fuel than usual, even though I haven't changed my driving habits. What could be causing this and how can I improve my fuel efficiency?

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Answers (2)

M

It is possible that your Audi A6's fuel efficiency is decreasing due to a faulty oxygen sensor. Get it checked by a mechanic and replace if necessary.

S

Another reason for decreasing fuel efficiency could be dirty fuel injectors. Consider getting them cleaned or replaced for better performance.

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