[theaveng]

I should specify interstate hypermiling. My guess would be the tiny 1.5 liter engines in the G2 and C would do better than the G3 or V.

However I'm confused that the EPA rating shows the opposite (1.8 L has better highway MPG than 1.5 liter cars). Why does real world experience show?

I should mention I'm planning to buy a Prius within a year, and that's why I'm researching which has the highest MPG for hypermiling. Thanks :-D