Mercedes-Benz Engine

M271

The Mercedes-Benz M271 is a DOHC I4 gasoline piston engine.

Years
2002–present
Configuration
I4
Fuel
Gasoline
Top power
204 PS
Mercedes-Benz M271 I4 engine

The Mercedes-Benz supercharger years, compressed into a single 1.8-liter four.

Replacing the M111 in 2002 and built at Untertürkheim, the M271 spent thirteen years being force-fed by whichever method was current. It started as the Kompressor engine — belt-driven supercharger, intercooler, port injection, fracture-split forged rods — and it is why a whole generation of C-, E-, CLK- and SLK-badged cars carried that word on the boot lid. In 2003 the same block took CGI stratified-charge direct injection, sold for barely two years. In 2009 the M271 Evo swapped the supercharger for a turbocharger while keeping direct injection, and the family topped out at 204 PS.

Its reputation is mixed and very specific. The single-row timing chain runs against cast-iron camshaft adjuster sprockets, whose teeth wear; the chain then stretches until it can jump, and the resulting fault codes are familiar enough that specializts sell re-hardened replacement sprockets. Mercedes-Benz gave the successor M274 a duplex chain. Away from road cars it had a cleaner life: HWA built a naturally aspirated two-liter version into the Mercedes-Benz Formula 3 engine, which carried championship-winning drivers across Europe and well beyond it for years.

Versions.

Every factory version of the M271.

VersionDisplacementBore × StrokeCompressionPowerTorque
271.8201,796 cc 82 × 85 mm —115 kW (154 hp; 156 PS) at 5,000 rpm250 N·m (184 lb·ft) at 1,600 rpm
271.860 (DE 18 LA)1,796 cc 82 × 85 mm 9.3135 kW (181 hp; 184 PS) at 5,250 rpm270 N·m (199 lb·ft) at 1,800 rpm
271.860 (DE 18 LA)1,796 cc 82 × 85 mm 9.3150 kW (201 hp; 204 PS) at 5,500 rpm310 N·m (229 lb·ft) at 2,000 rpm
271.861 (DE 18 LA)1,796 cc 82 × 85 mm 9.3135 kW (181 hp; 184 PS) at 5,250 rpm250 N·m (184 lb·ft) at 1,800 rpm
271.861 (DE 18 LA)1,796 cc 82 × 85 mm 9.3150 kW (201 hp; 204 PS) at 5,500 rpm310 N·m (229 lb·ft) at 2,000 rpm
271.9101,597 cc 82 × 75.6 mm —115 kW (154 hp; 156 PS) at 5,200 rpm230 N·m (170 lb·ft) at 3,000 rpm
271.9111,597 cc 82 × 75.6 mm —95 kW (127 hp; 129 PS) at 5,000 rpm230 N·m (170 lb·ft) at 3,000 rpm
271.9211,796 cc 82 × 85 mm —90 kW (121 hp; 122 PS) at 5,200 rpm190 N·m (140 lb·ft) at 1,500 rpm
271.9401,796 cc 82 × 85 mm —120 kW (161 hp; 163 PS) at 5,500 rpm240 N·m (177 lb·ft) at 3,000 rpm
271.9411,796 cc 82 × 85 mm —120 kW (161 hp; 163 PS) at 5,500 rpm240 N·m (177 lb·ft) at 3,000 rpm
271.9421,796 cc 82 × 85 mm —125 kW (168 hp; 170 PS) at 5,500 rpm250 N·m (184 lb·ft) at 3,000 rpm
271.9441,796 cc 82 × 85 mm 8.5120 kW (161 hp; 163 PS) at 5,500 rpm240 N·m (177 lb·ft) at 3,000 rpm
271.9461,796 cc 82 × 85 mm —105 kW (141 hp; 143 PS) at 5,200 rpm220 N·m (162 lb·ft) at 2,500 rpm
271.9481,796 cc 82 × 85 mm —141 kW (189 hp; 192 PS) at 5,800 rpm260 N·m (192 lb·ft) at 3,500 rpm
271.9501,796 cc 82 × 85 mm —135 kW (181 hp; 184 PS) at 5,500 rpm250 N·m (184 lb·ft) at 2,800 rpm
271.9521,796 cc 82 × 85 mm —115 kW (154 hp; 156 PS) at 5,200 rpm230 N·m (170 lb·ft) at 2,500 rpm
271.9541,796 cc 82 × 85 mm —135 kW (181 hp; 184 PS) at 5,000 rpm250 N·m (184 lb·ft) at 2,800 rpm
271.9561,796 cc 82 × 85 mm —135 kW (181 hp; 184 PS) at 5,500 rpm250 N·m (184 lb·ft) at 2,800 rpm
271.9571,796 cc 82 × 85 mm —135 kW (181 hp; 184 PS) at 5,500 rpm250 N·m (184 lb·ft) at 2,800 rpm
271.9581,796 cc 82 × 85 mm —120 kW (161 hp; 163 PS) at 5,500 rpm240 N·m (177 lb·ft) at 3,000 rpm

Applications.

Every model powered by the M271.

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