Formula One could delay overhaul of engine regs until after 2021

SPA-FRANCORCHAMPS, Belgium -- Formula One could delay proposed changes to its engine regulations until after 2021 if new manufacturers do not show an interest in joining the series.

Earlier this year, F1 proposed changes that would keep the basic V6 engines that exist today but remove the complicated MGU-H from the hybrid system. The plan also permitted an increase in the fuel allowance to help the engines rev higher and sound better, while an upgraded MGU-K was tabled to ensure they remained both powerful and road relevant.

The removal of the MGU-H proved a major sticking point for existing manufacturers Ferrari, Mercedes and Renault on the grounds that it result in a dumbing down of the…