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Mercedes-Benz M156
Manufacturer Mercedes-Benz
aka Type aka here, not up there
Type Petrol
Production/Introduction 2006 - present
Status In Production
Displacement 6,208 cc (6.208 L; 378.8 cu in)
Aspiration naturally-aspirated
Configuration V
Cylinders 8
Fuel System write if it is injected or carburated and the system used
Lubrification indicate the engine's type of lubrification
Output 503 hp (375 kW) @ 6800 rpm
464.7 lb-ft. (630 Nm) of torque @ 5200 rpm

525 hp (391 kW) @ N/A rpm
465 lb-ft. (630 N·m) of torque @ N/A rpm
Bore in inches
Stroke in inches
Compression write compression ratio here
In. Valves in inches
Ex. Valves in inches
Firing Order Firing order of cylinders
Left Bank Write which cylinders are in this bank (write N/A if it it is inline)
Right Bank (same as above)
Length in inches
Diameter in inches
Width in inches
Height in inches
Dry Weight lbs. / kg.
Fuel Consumption city/highway (mpg & km/L)
Emission/s CO: g/km
CO2: g/km
NOx: g/km
Hydrocarbon: g/km
Particulate: g/km
Chief Engineer write here

The M156 is the first V8 automobile engine designed autonomously by Mercedes-Benz subsidiary Mercedes-AMG, as previous AMG engines have always been based on original Mercedes engines. The engine was designed to be a naturally-aspirated racing unit, and will also be used in a number of high-performance "AMG"-badged Mercedes-Benz models.

The M156 displaces 6,208 cc (6.208 L; 378.8 cu in) and shares very little with other Mercedes-Benz engine families like the M155. The bore spacing, block design, and other features are unique to the AMG engine.

Although it displaces 6.208 liters, the engine will be marketed as the "6.3" to commemorate the famed M100 used in the 300SEL 6.3.

102.2 mm (4.02 in) bore and 94.6 mm (3.72 in) stroke. Output is 375 kW (503 hp) at 6800 rpm with 630 N·m (464.7 lb·ft) of torque at 5200 rpm.

The engine, however, has been uprated to produce 525 hp (391 kW) (and 465 lb·ft (630 N·m) of torque) in the late 2007 S 63, E 63, SL 63, CLS 63 & CL 63 models[1].

Mercedes has claimed it is the world's most powerful naturally-aspirated V8 engine.



It is a version used in Mercedes-Benz SLS AMG. Compared to the standard AMG engine, the SLS's engine includes an all-new intake system, reworked valve train and camshafts, the use of flow-optimised tubular steel headers and dethrottling of the exhaust system. The engine also utilizes a dry-sump lubrication system to lower the center of gravity of the car.<ref>Mercedes-Benz SLS AMG: fascination and high tech: The new 'Gullwing' from Mercedes-Benz</ref>

Engine code Years Displacement (bore x stroke) Compression (:1) [email protected] [email protected] Redline (rpm)
M159 2010- 6,208 cc (6.208 L; 378.8 cu in) (102.2 mm (4.02 in) x 94.6 mm (3.72 in) 11.3 571 PS (420 kW; 563 hp)@6800 650 N·m (480 lb·ft)@4750 7200rpm


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