Mercedes-Benz M176/M177/M178 engine
motor vehicle engine
The M176/M177/M178 is a petrol V8 engine range designed by Mercedes-AMG, replacing the M278 and M157 engines, and is based on the M133 engine.
The engine has two BorgWarner turbochargers positioned between the two cylinder heads in a "hot-V" configuration. The fuel injection system uses Bosch's new piezo-electric direct fuel injectors that deliver five squirts of fuel per combustion cycle.
The M176 engines are mostly assembled by machine with some components assembled by technicians at Untertürkheim manufacturing center outside Stuttgart. The M177 and M178 are individually assembled by the technicians in "one man, one engine" principle at the AMG manufacturing center in Affalterbach.
M176
The M176 version debuted in 2015 for the Mercedes-Benz G 500/G 550 and G 500 4x42. In 2019, M176 was equipped with EQ Boost mild hybrid 48V electrical system, producing additional output 16 kW (22 PS) and 250 N⋅m (184 lb⋅ft) of torque. This mild hybrid system was fitted to GLE 580 4MATIC and GLS 580 4MATIC. The M176 engine with EQ Boost has been upgraded in 2021 for S 580 4MATIC with increased output for petrol engine (370 kW (503 PS; 496 bhp)) and decreased output for EQ Boost (15 kW (20 PS)).
Applications
M177
The M177 was the first variation released in the Mercedes-AMG C63. In contrast to the M178, this version of the engine uses wet-sump lubrication.
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