Mercedes-Benz Engine

M180

The Mercedes-Benz M180 is a SOHC I6 gasoline piston engine.

Years
1951–1980
Configuration
I6
Fuel
Gasoline
Top power
120 PS
Mercedes-Benz M180 I6 engine

The first engine Daimler-Benz drew from a blank sheet after the war — and the hardest to retire.

Credited to Wolf-Dieter Bensinger, it appeared in the 220 of April 1951: the company’s first post-war six and its first short-stroke petrol engine, 2,195 cc from 80 × 72.8 mm, with a chain-driven overhead camshaft, a counterflow head and a four-bearing crankshaft. It went into a barely altered 170 S chassis wearing pre-war bodywork, and it was the reason the press forgave the styling — 140 km/h in a class that had been making do with 52 PS. From 1954 the cast-iron cylinder head gave way to light alloy.

What followed was a dynasty. The same block and cam-in-head layout underpinned the M 127, the M 108 and M 129, and the M 130, and through the M 130 the twin-cam M 110 as well; the last of the line was built in 1989, in a 280 GE. One of the odder branches was military. NATO standardization required petrol engines in Unimogs so that tanks, jeeps and trucks could draw on a single fuel supply and start in deep cold, and 2.2-liter M 180s were still being made for the Unimog 404 into the late 1970s.

Versions.

Every factory version of the M180.

VersionDisplacementBore × StrokeCompressionPowerTorque
180.9202,195 cc 80 × 72.8 mm 6.559 kW (79 hp; 80 PS) at 4,600 rpm142 N·m (105 lb·ft) at 2,500 rpm
180.921 (M 180 II — to 07.1957)2,195 cc 80 × 72.8 mm 7.663 kW (84 hp; 85 PS) at 4,800 rpm157 N·m (116 lb·ft) at 2,400 rpm
180.921 (M 180 II — from 08.1957)2,195 cc 80 × 72.8 mm 8.766 kW (89 hp; 90 PS) at 4,800 rpm167 N·m (123 lb·ft) at 2,400 rpm
180.924 (M 180 III — to 07.1957)2,195 cc 80 × 72.8 mm 7.674 kW (99 hp; 100 PS) at 4,800 rpm162 N·m (119 lb·ft) at 3,500 rpm
180.924 (M 180 III — from 08.1957)2,195 cc 80 × 72.8 mm 8.778 kW (105 hp; 106 PS) at 5,200 rpm172 N·m (127 lb·ft) at 3,500 rpm
180.9402,195 cc 80 × 72.8 mm 8.770 kW (94 hp; 95 PS) at 4,800 rpm169 N·m (125 lb·ft) at 3,200 rpm
180.9412,195 cc 80 × 72.8 mm 8.781 kW (108 hp; 110 PS) at 5,000 rpm172 N·m (127 lb·ft) at 3,500 rpm
180.9452,306 cc 82 × 72.8 mm 9.077 kW (104 hp; 105 PS) at 5,200 rpm174 N·m (128 lb·ft) at 3,600 rpm
180.9472,306 cc 82 × 72.8 mm 9.088 kW (118 hp; 120 PS) at 5,400 rpm178 N·m (131 lb·ft) at 4,000 rpm
180.9492,306 cc 82 × 72.8 mm 9.088 kW (118 hp; 120 PS) at 5,400 rpm178 N·m (131 lb·ft) at 4,000 rpm
180.9542,292 cc 81.75 × 72.8 mm 9.088 kW (118 hp; 120 PS) at 5,400 rpm178 N·m (131 lb·ft) at 3,600 rpm

Applications.

Every model powered by the M180.

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