The mid mounted 5 L (310 cu in) engine was similar to the Toyota 7 engine except that EX-7 did not have turbochargers. The Toyota 7 had 800 bhp (600 kW) but the EX-7 was detuned down to 450 PS (330 kW) for road use. Transmission was by a manual gearbox as part of a transaxle.
Double wishbone independent suspension was on all 4 wheels and vented disc brakes were used on both the front and rear.
The body shape was similar to that of other super cars of the time, like the Mercedes C111, with a long flat nose blended into a long windscreen and a high rear with a vertical cutoff. The doors were shaped like a typical gull-wing door but unusually the hinge was at the rear of the roof section of the door and each door opened to the rear.