Mercedes-Benz Engine

M279

The Mercedes-Benz M279 is a SOHC V12 gasoline piston engine.

Years
2012–present
Configuration
V12
Fuel
Gasoline
Top power
630 PS
Mercedes-Benz M279 V12 engine

The modern Mercedes V12 — still three valves, still twin-turbo, rebuilt by Affalterbach for a world that no longer wants twelve cylinders.

Launched in 2012 under the R231 SL 65 AMG, the M279 keeps the M275’s 60° aluminum architecture, 82.6 × 93 mm bore and stroke and SOHC three-valve heads, then revises almost everything else: larger turbo spiral sections, new exhaust manifolds and wastegates, multi-spark twin ignition, start/stop and a lighter AMG sports exhaust. Peak torque stays electronically capped at 1,000 N·m so the gearbox survives; peak power on the AMG tune is 630 PS.

Beyond the SL 65 it powered the S 65 AMG, the G 65 AMG and the Maybach S 650 / S 680 — the last of which still carries a V12 into the present with 4MATIC. The closely related M277 covers non-AMG S 600 duties. In an industry racing toward four cylinders and batteries, the M279 is Stuttgart’s final twelve-cylinder stand.

Versions.

Every factory version of the M279.

VersionDisplacementBore × StrokeCompressionPowerTorque
279.9815,980 cc 82.6 × 93 mm 9463 kW (621 hp; 630 PS) at 4,800 rpm1000 N·m (738 lb·ft) at 2,300 rpm