422 - 4.18v - 4.24v

The 422 was introduced in 1988 as a replacement for all previous versions of the 420 four-door family, including the 420 Si from which its mechanicals were derived. The car was restyled with a new front grille, mirrors and five-bolt alloy wheels. In 1990, the 4.24v mirrored the two-door 2.24v, using the latest four-valve-per-cylinder, four overhead-camshaft V6 engine. Styling enhancements (including blacked-out chrome trim, specific bumpers and rocker panels along with a discreet spoiler on the trunk) conferred a sporty yet refined allure to this high-performance sedan. The independent suspension featured active electronic control on all four wheels, while the interior’s mix of leather and wood trim conveyed a feeling of exclusivity. Launched in December 1990, the 4.18v was similar to the 422, designed with smaller displacement for the Italian market. Its main feature was ABS fitted as standard, a first for the Biturbo family. Produced in only 77 units, this particular model is unquestionably one of the rarest models within the Biturbo range.

Data sheet 422 4.18v 4.24v
Model code Tipo AM332 Tipo AM332 Tipo AM332
Body type 4-door, 5-seater saloon 4-door, 5-seater saloon 4-door, 5-seater saloon
Design Pierangelo Andreani Pierangelo Andreani Pierangelo Andreani
Production years 1988 - 1992 1990 - 1993 1990 - 1993
Maserati era De Tomaso De Tomaso De Tomaso
Numbers produced 978 77 384
Chassis Monocoque steel construction Monocoque steel construction Monocoque steel construction
Dry weight 1,257kg 1,275kg 1,370kg
Engine configuration 90° V6, three valves per cylinder (two intake, one exhaust), single overhead camshaft, twin-turbo 90° V6, three valves per cylinder (two intake, one exhaust), single overhead camshaft, twin-turbo 90° V6, 24 valves, double overhead camshaft, twin-turbo
Displacement 1,996cc 1,996cc 1,996cc
Maximum power 220hp @ 6,250rpm 220hp @ 6,350rpm 245hp @ 6,200rpm
Top speed 225km/h 218km/h 230km/h
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