Mercedes M157 Petrol Engine Manuals

The Mercedes-Benz M157 is a 5.5 L (5,461 cc) petrol engine offering six states of standard output with additional AMG performance package upgrades, Produced from 2010-on

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Download: MB M157 Engine Introduction Into Service

Mercedes Benz M157 Engine Introduction Manual
Overview of engine operation and major component
Download: 15.6mb, 67 pages, .pdf
Application: S-Class, CL-Class, SL-Class, E-Class, CLS-Class

USD $9.95

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Download: MB M157 Engine Service Manual

Mercedes Benz M157 Engine Service
Download: 143mb, 1427 pages
Format: .pdf document
Application: S-Class, CL-Class, SL-Class, E-Class, CLS-Class

USD $19.95

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M157 Engine Technical Data

The M157 is the second variant of the M278 and is tuned by Mercedes-AMG with a bore and stroke of 98 mm × 90.5 mm (3.86 in × 3.56 in) for use in higher-performance models.

There are six states of output with the M157

For the S-Class and CL-Class, power is 400 kW (544 PS; 536 bhp) at 5,500 rpm with 800 Nm (590 lb-ft) of torque at 2,000-4,500 rpm, or 420 kW (571 PS; 563 bhp) at 5,500 rpm with 900 Nm (664 lb-ft) of torque at 2,500-3,750 rpm with AMG Performance Package.

For the 2013-15 SL-Class, power is 395 kW (537 PS; 530 bhp) or 415 kW (564 PS; 557 bhp) with the optional AMG Performance Package.

For the 2012-2013 E-Class and CLS-Class, power is 386 kW (525 PS; 518 bhp) with 700 Nm (516 lb-ft) of torque in standard tune, or 410 kW (557 PS; 550 bhp) with 800 Nm (590 lb-ft) of torque with the AMG Performance Package.

Beginning with the 2014 E-Class and CLS-Class, power increases to 410 kW (557 PS; 550 bhp) 720 Nm (531 lb-ft) of torque for standard tune, or 430 kW (585 PS; 577 bhp) with 800 Nm (590 lb-ft) of torque for "S-Model" variants.

These engines are mated to the AMG Speedshift MCT 7-speed semi-automatic transmission, which replaces the 7G-Tronic's torque converter with a wet clutch pack. Note that this MCT 7-speed can handle considerably more torque and is not the same unit as the dual-clutch transmission found on the Mercedes-Benz SLS AMG.

AMG 63 BiTurbo (M157)

The direct injected and twin turbocharged 5.5 liter M157 V8 AMG engine produces 544 HP and 800 Nm (590 lb-ft) of torque.

M157 Versions and Applications

Production: M157.980 2010+, M157.982 2012+

2011-2013 Mercedes-Benz S 63 AMG
2013-2017 Mercedes-Benz S 63 AMG
2011–2014 Mercedes-Benz CL 63 AMG
2012–2018 Mercedes-Benz CLS 63 AMG
2012–2015 Mercedes-Benz ML 63 AMG
2015-2019 Mercedes-Benz AMG GLE 63
2012–2016 Mercedes-Benz GL 63 AMG
2013–2018 Mercedes-Benz G 63 AMG
2016-2019 Mercedes-Benz AMG GLS 63
2012–2016 Mercedes-Benz E 63 AMG
2012–2019 Mercedes-Benz SL 63 AMG

The M157 engine replaces the previous M156 in most of the AMG lineup. Despite the 5.5–liter displacement, all models are designated "63" for marketing purposes..