MAN A 25 – B 45

In the autumn of 1955, MAN's truck, bus, and tractor production moved to Munich, into the former BMW aircraft engine factory. Only engine production remained in Nuremberg. At the same time, a renewed tractor lineup was introduced, featuring M engines. In these engines, fuel was injected onto the walls of the spherical combustion chamber. The intake air was swirled, mixing with the fuel on the combustion chamber walls. The main advantage of this method was the engine's quietness. MAN's tractor range still focused on fairly large and well-equipped four-wheel drive tractors. The power classes in the new lineup remained the same as before. Also, in the four-wheel drive models, the front axle was suspended and front fenders were standard equipment. At this stage, tractor-patterned front tires also started to appear. The A 45 was an intermediate model produced for only half a year and still had the old engine.

In 1956, the stroke length of the engines was increased. The maximum power remained unchanged but was achieved at a lower engine speed. Also in 1956, the 2-cylinder four-wheel drive tractor A 25 A was introduced. It featured ZF's continuous engagement 5+1 gearbox.

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