Is there an MPG difference?
It depends on the vehicle.
The 4.6L gas murdering town car we had could not tell the difference between E10 and E0.
The 1.8l turbo in the bug gets worse MPG on regular, I only have E0 RUG here. Comparing E10 mid grade or premium gas and E0 RUG is not a valid comparison.
The Hyundai always gets better MPG on the E0 gas than the E10.
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1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
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