In the remaining races, Ickx could not close the points gap to Rindt for the drivers title, and Lotus won the Constructors Championship ahead of Ferrari.

However the B2 suffered with handling problems: the combination of the innovative rear suspension and the new Firestone tyres gave severe vibrations when driven close to the limit.

For 1973, FIAT executives imposed a new technical staff and Forghieri was transferred to the experimental department; his role was taken by Sandro Colombo, a former Gilera and Innocenti engineer.

A new full monocoque chassis was built by specialist English company TC Prototypes, under John Thompson's guidance, and the engine became a fully stressed member.

Ickx left the team halfway through the season in order to contest the 1973 German Grand Prix at the Nürburgring in a McLaren, where he took 3rd place behind the Tyrrells of Stewart and François Cevert, despite being given an older-spec Ford Cosworth V8 and the hardest compound of tyres available.