The first production vehicle was the Bugatti EB110 GT which featured a 3.5-litre, 5-valve per cylinder, quad-turbocharged 60° V12 engine, a six-speed gearbox, and four-wheel drive. Stanzani proposed an aluminium honeycomb chassis, which was used for all early prototypes. He and president Artioli clashed over engineering decisions so Stanzani left the project and Artioli sought Nicola Materazzi to replace him in June 1990.