The M115 engine family was a straight-4 automobile engine from Mercedes-Benz that was produced during the 1970s. This engine was a successor to the M121 and was replaced by the M102 engine. This engine differs from the M121 by its five-bearing crankshaft. The engine was produced in several versions with differing volume, compression, and horse power according to its application.
The M115.920 is a engine with a power output of and a bore and stroke of . This type shares the crankshaft with OM615 220D.
The M115.921 is a engine.
The M115.923 is a engine.
The M115.924 is a engine, producing , depending on compression.
The M115.926 is a engine, producing , depending on compression.
The M115.938 is a engine with a bore and stroke of . Power output is .
The M115.939 is a 2.0-litre engine with reduced compression, which follows from a different head.
The M115.951 is a 2.3-liter engine.
The M115.952 is a engine with .
The M115.954 is a version with a bore and stroke. Power output is .
The M 115.973 is a version with a bore and stroke. Power output is .
The M 115.973 2.6 Brabus is a version with a bore and stroke. Power output is .