Mercedes-Benz 256ci Specs: 92 x 78.9 mm

Mercedes-Benz 256ci specs: 92 x 78.9 mm (3.6220 x 3.1063 in) bore and stroke, shared by all 3 versions. Displacement, compression and factory ratings.

At a glance

Displacement	256 ci
Cylinders	8
Bore	3.622"
Stroke	3.106"
Advertised power	275 hp
Years	1986–1999

Engines in this family

Engine	Displacement	Bore × Stroke	CR	HP
M119.975	256 ci	3.622" × 3.1063"	—	—
M119	256 ci	3.622" × 3.1063"	—	275
M116.965	256 ci	3.622" × 3.1063"	—	—

Factory cars with a Mercedes-Benz 256ci

• Mercedes-Benz S-Class: 1986; 1987; 1988; 1989; 1990; 1991; 1992, M119; 1993, M119; 1994, M119; 1995, M119; 1996, M119; 1997, M119; 1998, M119; 1999, M119
• Mercedes-Benz E-Class: 1992; 1993; 1994; 1995; 1997, M119, 275 hp

What varies across the family

All are oversquare — bore larger than stroke, which favours revs over low-end torque.

Each engine page carries rod ratio, mean piston speed, bore/stroke character and cylinder head specs where published, and links into the calculators with its dimensions already filled in.

← All Mercedes-Benz engines