Hey everyone. I've got the 1999 9-3 Turbo hatchback, automatic. I'm having a huge problem, and that is that I'm getting 15mpg. I was getting ~21 before, but the MPG deteriorated over the last couple of weeks.
So I took it to my local shop, where they replaced the oxygen sensor. After that didn't fix it, they did a full tune-up and found a valve that needed to replace.
So here I am, a day later, and the gas mileage still sucks. Does anyone have any suggestions for me?
Thanks nick