None.
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You cant buy formula one cars. You can only win them.
In Formula 1, a lot. The cars run on special high performance unleaded fuel. On average, a Formula 1 car does between 2.3MPG(US) to 3.6MPG(US). In European figures that would be between 60l/100km and 100l/100km.
In batteries.
There are 2 Ferrari Formula 1 cars for sale in the Ferrari dealership, and there's a Formula Gran Turismo for sale at 2500000 Credits at the Online Dealership.
Formula 1 cars have high drag coefficients because they are open wheel, and they have large air dams and spoilers to create downforce.
different manufactures make different cars according to there teams.
6 or usually 7 forward gears and 1 reverse, though this is rarely used.
The rules which participating cars must follow.
Yes there are formula 1 cars in gran turismo psp.
Depending on circuits
Sometimes they use Nitrogen.