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Q: My gas mileage has dropped to 22 mpg, what could be the cause?

asked by on

Mercedes-Benz c class 220cdi avantgarde spend 22mpg . In been in road for 8 month. no have smoke frome exhaust . Have to much power going very good . Just it spend in extrem fuel. Can you help me plz

My car has 12189 miles.
My car has an automatic transmission.

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