Emissions

this is maybe not be directly conected to 3's cars but do you guys know how much CO2 persentage is allowed in the exhaust gases in the US?

Its dependant on the state you are in. As an example in Michigan we have no emmissions testing.

Nor does KY hehehe. But if you import a car i believe it is the state that u are importiting to. Which if the car comes from Japan you usally import to cali. If from UK u usally import to FL or NY. But i believe there is a certain limit for all us car isn't there? hince EPA testing.