There are many differences in terms of rules governing the two series. Be it engine displacement, number of cylinders etc. One big difference is F1 cars use high octane gas (petrol) and Indy cars run on ethanol (alcohol). read more
Meanwhile looking at dimensions, the DW12 is 5011mm long, 1994mm wide and 1016mm. This means the cars are larger than F1 machines in all areas, as well as being slightly quicker in low-downforce speedway trim. IndyCar and F1 cars are very different beasts, with different priorities. They are both open-wheel racers but have varying performance figures. read more
Cars. All IndyCars are “cut from the same cloth,” being modeled after the same official spec car: Dallara DW12. This means they abide by the same specifications and chassis. This puts all racers on the same level “mechanical” playing field, with only cosmetic differences. read more