Several distinct vehicles have borne the Midget name over the years, but all have had in common a single or two-seat utilitarian design, with an enclosed or semi-enclosed cab.

The engine was an air-cooled two-stroke single-cylinder design of 250 cc (ZA) which produced 8 PS (5.9 kW).

Beginning in August 1959 it was replaced by the more comfortable DSA, which has doors and a more powerful 10 PS (7.4 kW) version of the ZA engine.

In October 1959 the MP2 Midget was introduced in Japan - updated with such features as a steering wheel, doors, and seating for two.

[2] The engine was the same (ZA) air-cooled two-stroke one-cylinder design with 10 PS (7 kW) but an extra 80 kg (180 lb) made for a sluggish vehicle.

Subsequent revisions to the MP design were soon made, resulting in the model MP3 which has the larger ZD engine of 305 cc which produced 12 PS (9 kW).

In August 1961 the doors were modified, now incorporating a triangular vent window and a chromed side strip.

As a matter of fact, nearly all body panels were altered in some way, with new marker lights installed, redesigned doors, a blunter and more rounded front, bigger vent openings in front of the doors' leading edge, and finally a solid metal roof rather than the earlier fabric-covered opening.

Both are identical in width and height, but the EFI (Electronic Fuel Injection) version is shorter by 75 mm[clarification needed].