See other engines in this family
Mercedes-Benz M111 specs: 2.2L (134 ci) 4-cylinder, 89.9 x 86.6 mm (3.5394 x 3.4094 in) bore and stroke, 10:1 compression. Built 1994–1996.
The Mercedes-Benz M111 is close to square: 3.5394" bore against 3.4094" stroke, within 3.8%, which splits the difference between a high-revving layout and a torque layout. The 3.4094" stroke does not reach 4,000 ft/min of mean piston speed until about 7,050 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 4 cylinders displaces 33.5 ci (549 cc).
10:1 is in the range that usually runs on pump premium.
3 factory variants share these dimensions across 1994–1996.
| Displacement | 134 ci / 2.2 L |
|---|---|
| Bore | 3.5394" |
| Stroke | 3.4094" |
| Cylinders | 4 |
| Configuration | I4 |
| Compression ratio | 10:1 * |
| Bore/stroke ratio | 1.038 |
* Compression ratio from a single source; not yet cross-verified.
| Fuel type | gas |
|---|---|
| Years | 1994–1996 |
| Bore/stroke character | 1.038 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,409 ft/min — conservative for a street engine |
| Displacement per cylinder | 33.5 ci |
| Static compression | 10:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 1994 | — | M111 |
| 1995 | — | M111 |
| 1996 | — | M111 |
1 factory vehicle, 1994–1996. Each year opens that model's engine table.