The Mitsubishi HSR (Highly Sophisticated-transport Research) is a range of concept cars exhibited by Mitsubishi Motors through the late 1980s and 1990s. There were six distinct iterations of the vehicle released biannually to coincide with the Tokyo Motor Show, with each model after the original identified by a Roman numeralsuffixed to the name.
HSR (1987) — The first vehicle was a showcase for Mitsubishi's integrated electronic systems offering automatic control of drive train, suspension, steering, brakes, and driving position according to driving conditions or weather. It was powered by a 2.0 litre 16 valve turbocharged engine producing , had a maximum speed claimed by the factory at .
HSR-II (1989) — The second generation had a heavy emphasis on active aerodynamics, with a series of movable fins and spoilers offering a drag factor which varied from 0.20 to 0.40 depending on setup. Much of the technology found its way to the Mitsubishi HSX, the precursor to the company's GTO sports car.
HSR-III (1991) — The third concept car to bear the HSR name was powered by the 6A10 1.6 litre V6, the world's smallest mass-produced V6.
HSR-IV (1993) — A modulated displacement version of the 1.6 litre V6 powered the fourth prototype, a......