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RedDevil · 06-15-2021, 10:20 AM

It depends on how fast you want to drive.
On the highway the battery does not get exercised much so its condition would not make a difference. Speed is everything for MPG; the slower the better.

An old Civic with a manual gearbox could well beat the Prius. The more you mod, the bigger the difference; the Prius is already quite optimal and relatively heavy, your options are limited there.

I would still go with the Prius because it is a lot safer and easier to drive.

06-15-2021, 10:20 AM	#2 (permalink)
RedDevil Master EcoWalker Join Date: Dec 2012 Location: Nieuwegein, the Netherlands Posts: 3,999 Red Devil - '11 Honda Insight Elegance Team Honda 90 day: 55.4 mpg (US) Thanks: 1,714 Thanked 2,248 Times in 1,456 Posts	It depends on how fast you want to drive. On the highway the battery does not get exercised much so its condition would not make a difference. Speed is everything for MPG; the slower the better. An old Civic with a manual gearbox could well beat the Prius. The more you mod, the bigger the difference; the Prius is already quite optimal and relatively heavy, your options are limited there. I would still go with the Prius because it is a lot safer and easier to drive. __________________ 2011 Honda Insight + HID, LEDs, tiny PV panel, extra brake pad return springs, neutral wheel alignment, 44/42 PSI (air), PHEV light (inop), tightened wheel nut. lifetime FE over 0.2 Gigameter or 0.13 Megamile. For confirmation go to people just like you. For education go to people unlike yourself. Last edited by RedDevil; 06-15-2021 at 11:56 AM..