Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - Toyota Claims Bigger Engine are Better for Fuel Economy

wagonman76 · 03-06-2009, 12:57 PM

I agree that to a point, a larger engine will give better FE. I have had several GM 2.8 and 3.1 MPFI engines in identical cars, and the 3.1 always gives better FE. The only difference between the powertrains is the piston stroke.

Same thing with some others, when you have an undersized engine for the vehicle, the FE takes a dump. Take a larger engine so you barely have to work it, and to a point you can get better FE.

03-06-2009, 12:57 PM	#2 (permalink)
wagonman76 Master EcoModder Join Date: Jun 2008 Location: Northwest Lower Michigan Posts: 1,006 Red Car - '89 Chevrolet Celebrity CL 4 door Team Chevy 90 day: 36.47 mpg (US) Winter Wagon - '89 Pontiac 6000 LE Wagon 90 day: 28.26 mpg (US) Thanks: 8 Thanked 17 Times in 16 Posts	I agree that to a point, a larger engine will give better FE. I have had several GM 2.8 and 3.1 MPFI engines in identical cars, and the 3.1 always gives better FE. The only difference between the powertrains is the piston stroke. Same thing with some others, when you have an undersized engine for the vehicle, the FE takes a dump. Take a larger engine so you barely have to work it, and to a point you can get better FE. __________________ Winter daily driver, parked most days right now Summer daily driver