He said that the car lacked rigidity and its chassis was flexing, despite its carbon fibre and kevlar monocoque, and that the chassis couldn't handle the abrupt power delivery of the turbocharged Honda engine which made the car difficult to drive, a common complaint of Piquet and Nakajima, as well as the team's test driver Martin Donnelly. He also noted how cramped the driving position was and that the steering wheel and instrument panel were so close together that it made the panel almost unreadable.
The car's design flaws were highlighted by its inability to maintain rigidity, despite its advanced materials. The turbocharged Honda engine's rapid power delivery created handling challenges, as did the cramped driving position and close placement of essential controls, issues that Piquet, Nakajima, and test driver Martin Donnelly had previously noted.