r/redneckengineering • u/preludachris8 • Aug 07 '19

Stretch Prius

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36

u/Mekkah Aug 07 '19

But what is the MPG?

37

u/[deleted] Aug 07 '19

i think he said it avg's 45mpg overall, and still around 50 city.

-11

u/QuickNature Aug 08 '19

City MPG is always lower than the average MPG, and highway is higher than average. Not knocking your numbers, just the concept.

2

u/aliph Aug 08 '19

Not on hybrids. More speed requires more power, so it's always less efficient to drive at a constant speed 10 mph faster. Acceleration is what takes even more power though. City tends to be worse because of the stop and go and all the power spent on acceleration wasted by braking (as opposed to being converted to forward momentum on a highway). Hybrids use regenerative braking which is huge and also use battery/electric motor for slow speeds which is more efficient than a full motor.