The MCA-II was cleaner yet, and with balance shafts it also offered a much smoother run, at the loss of a few horsepower.

The Sports engine did not meet the stricter emissions laws, which led to the demise of the Skipper.

22 kW (30 PS) at 6500 rpm: Minica 5 Sedan This engine met the enlarged kei-jidosha regulations which took effect at the end of 1975.

It was called the Vulcan S in period advertising and went on sale in mid-April 1976; it was the first of the new, enlarged class of kei cars to hit the market.

The G23B engines also featured the MCA-JET improved emissions system with a catalytic converter and three valves per cylinder.