Has anyone else had a drastic MPG drop after a 15k service? I was averaging 24/25 mpg and I am now getting less than 12 mpg. the service said it was because of weather changes... seems like bs to me!
2004 WRX MPG drops
Dec 30, 2004
2 Replies
I've seen noticable changes with seasonal change, but I think it's more because of the gasoline formula changing and the computer relearning it.
Try a tankful of Chevron premium and see what happens. If it still stays at
12, you've got a problem.I know "summer" and "winter" gasolines are formulated differently, but a
50% reduction in fuel economy? It's either leaking somewhere or you are pushing it through the engine. Check the spark plugs, looking for lots of black fluffy deposits.Join the Discussion
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