Further development of the 'M'-type. 847-cc, 4-cylinder, ohc engine. Two carburetors, 36 bhp at 5200 rpm ('J1' and 'J2'). 746-cc supercharged ('J3' and 'J4'). 'J1' 4-seater; 'J2' 2-seater; 'J3' supercharged; 'J4' supercharged racing model (72.3 bhp at 6000 rpm). Four-speed gearbox. Centre-lock wire wheels. Some had swept wings, instead of cycle-type. Approximate numbers built: 'J1'/'J2', 2500; 'J3'/'J4', 30.

Restored J2
See magazine article:
Road Test M.G. Midget Two-Seater (J2) - Autocar August 5, 1932 (0.8-MB pdf)