As with the current G4, the G20's standard engine installation is Ford's Zetec. In the G20's case this is the 1800cc unit, bog standard save for the induction and exhaust systems which have to be changed because the Ford parts won't fit. Most specialist companies using the Zetec (including Dare) use an 'off the shelf' induction system from Weber, but Ginetta use a custom made system originally developed for their Class A racers, which is designed to take the Ford throttle body and injectors. In this form the engine might only develop around 125bhp, but then the G20 only weighs 660kg, equating to a useful 190bhp per ton, which is better than a Boxster and translates to 0-60 in 6.5 seconds and 125mph.