Q: Mileage is incorrect, Check Engine Light is on, and the car shakes - 2004 Mitsubishi Galant

asked by on October 25, 2016

Hi when I brought the car the mileage was 200,000 something. I recently got an oil change and noticed the mileage says 82,000. How is it possible for it to change like that? Also my service engine soon light is own and I was told it was the oxygen sensor which I have scheduled to have fixed by you guys this Sunday. I also know I need new tires and the car shakes when I start the car when I go over 60 mph. I read that it has to do with the tires and spark plugs. Which is more important to get fixed first?
My car has an automatic transmission.

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