The Biturbo i features Weber-Marelli fuel injection, which improves emissions, performance and driving pleasure compared with the twin-carburettor Weber Biturbo version. Sequential multipoint injection and ignition were electronically controlled, with the engine running on constant overboost. Introduced in autumn 1986, the car differed from the carburettor version in its wheels and oval dashboard with the famous clock at the top of the centre console. It was produced until July 1990, when a total of 683 units were sold.