Does anyone know what mods are out there for gas/electric cars like the hybrid civic? I would also like to know what impact such mods would have on the fuel economy.

 

other than cosmetic mods? none. i would assume that any "performance" mods would have a negative impact on fuel economy. the civic hybrid is a precisely engineered product to begin with... i'm sure that they've squeezed all the efficiency they have out of it. it's not a performance car in any respect