Reference

Only those manufacturers registered and approved as FIA Formula 4 component manufacturers ... increased by maximum €2,200. Formula 4 cars homologated before 01.01.2019: Base price +1.3% for 2021 +X.X% for 2022 ... The rate is the maximum increase allowed for each part separately.

The price of the rolling chassis (as defined in Article 2.3) may not exceed €33,000. In case the rolling chassis is sold including the 2018 Safety Update Kit, the price may be increased by maximum €2,200. Formula 4 cars homologated before 01.01.2019: Base price +1.9% for 2020 +1.3% for 2021

This category includes ads for used race cars matching the F4, F3, F2 and even the Formula 1 specification, with currently active formula cars listed along the former F1 legend cars. ... FIA Formula 4 Tatuus T-014. ... limited to a 4-cylinder engine with a maximum output of 160hp. There are no international (global) Formula 4 championships