Mercedes-Benz Engine

M275

The Mercedes-Benz M275 is a SOHC V12 gasoline piston engine.

Years
2003–2014
Configuration
V12
Fuel
Gasoline
Top power
612 PS

Mercedes-Benz’s first twin-turbo V12 — the quiet answer to naturally aspirated excess, and the heart of every modern 600 and 65.

Loosely based on the short-lived naturally aspirated M137, the M275 kept the 60° aluminum layout, SOHC three-valve heads and twin-spark ignition, then reinforced the block for boost and bolted on a pair of BorgWarner turbos with air-to-water intercooling. The 5.5-liter (82 × 87 mm) arrived in 2003 in the S 600, CL 600 and R230 SL 600 at up to 517 PS and more than 800 N·m from under 2,000 rpm — torque that arrived so early the five-speed automatic often became the limiting factor.

AMG stretched it to 6.0 liters for the 65 series — SL 65, CL 65, S 65 — with outputs from 612 PS and a full 1,000 N·m. Maybach wore a closely related M285. By 2012 Affalterbach had begun the M279 redesign; the last M275s left the R230 and C216 lines in the early 2010s.

Versions.

Every factory version of the M275.

VersionDisplacementBore × StrokeCompressionPowerTorque
275.9515,513 cc 82 × 87 mm 9368 kW (493 hp; 500 PS) at 5,000 rpm800 N·m (590 lb·ft) at 1,800 rpm
275.9545,513 cc 82 × 87 mm 9380 kW (510 hp; 517 PS) at 5,000 rpm830 N·m (612 lb·ft) at 1,900 rpm
275.9815,980 cc 82.6 × 93 mm 9450 kW (603 hp; 612 PS) at 4,800 rpm1000 N·m (738 lb·ft) at 2,000 rpm
275.9835,980 cc 82.6 × 93 mm 9450 kW (603 hp; 612 PS) at 4,800 rpm1000 N·m (738 lb·ft) at 2,000 rpm

Applications.

Every model powered by the M275.

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