The FIA (Fédération Internationale de l’Automobile) created the Formula 4 category in 2013. It is the first step on the single-seater ladder for young drivers, many of whom come from the world of karts. To facilitate access to F4 in the United States the price of the car is $45 000 and the running costs of the single-make formula are strictly cost capped.

Each national federation creates its own championship for its young drivers and can choose its own constructor and engine.

Onroak Automotive through its make, Crawford, is the exclusive constructor for the United States. The Crawford F4 enables young drivers to race in the United States F4 Championship, and it is also destined for driving schools all over the world that want to renew their range of single-seater training cars.