sx sonic
New member
Well, nothing from the dealer - also forgot to mention I'm running 45 psi in the tires.
With a firm tailwind coming home on the highway yesterday, 32mpg. Sigh.
:sadbanana:
It sounds like you're doing everything right to beat the EPA est and yet coming up very short of it. Mitdr's been getting mid 40s mpg hypermiling in his 1.8 manual. I think there's something off on your sonic, whether it's something the dealer can fix or find I don't know; occasionally it's a bunch of little things being just barely off that can cause uncommon problems.