Mercedes-Benz M176/M177/M178 engine

Last updated
Mercedes-Benz M176/M177/M178
The engineroom of Mercedes-AMG GT R (C190).jpg
Overview
Manufacturer Mercedes-AMG
Production2015–present
Layout
Configuration 90° V8
Displacement 4.0 L; 243.0 cu in (3,982 cc)
Cylinder bore 83 mm (3.27 in)
Piston stroke 92 mm (3.62 in)
Cylinder block materialCast-aluminium, closed deck
Valvetrain DOHC 4 valves x cyl.
Compression ratio 10.5:1
RPM range
Max. engine speed 7,000 rpm
Combustion
Supercharger BorgWarner's e-Booster (EQ Boost; 2019—present)
Turbocharger BorgWarner Twin-turbos
Fuel system Direct injection
Fuel type Gasoline
Oil system
Cooling system Water-cooled
Output
Power output 340–551.5 kW (462–750 PS; 456–740 hp)
Torque output 600–900 N⋅m (443–664 lb⋅ft)
Dimensions
Dry weight 209 kg (461 lb)
Chronology
Predecessor Mercedes-Benz M278 / M157 engine (4.7 & 5.5L)
Mercedes-Benz M152 engine
Mercedes-Benz M156 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. [1]

Contents

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. [2]

The M176 engines are mostly assembled by machine with some components assembled by technicians at Untertürkheim manufacturing centre outside Stuttgart. The M177 and M178 are individually assembled by the technicians in "one man, one engine" principle at the AMG manufacturing centre in Affalterbach. [3]

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. [4] 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

ModelYears
Mercedes-Benz G 500/G 550 and G 500 4×4² (W463, first generation) 2015–2018
Mercedes-Benz S 560/S 560 4MATIC (W222/V222) 2017–2020
Mercedes-Maybach S 560/S 560 4MATIC (X222) 2017–2020
Mercedes-Benz S 560 Coupe & Cabrio (C217) 2017–2020
Mercedes-Benz G 500/G 550 (W463, second generation) 2018–2024
Mercedes-Benz GLE 580 4MATIC (W167/V167) 2019–
Mercedes-Benz GLS 580 4MATIC (X167) 2019–
Mercedes-Benz S 580 4MATIC (W223/V223) 2021–
Mercedes-Maybach S 580 4MATIC (without EQ Boost) (Z223) 2021–
BAIC BJ90 2017–

M177

The M177 was the first variation released in the Mercedes-AMG C63. [5] In contrast to the M178, this version of the engine uses wet-sump lubrication. In the C63 and GLC63 applications, the turbos are single-scrolled, whereas in E63 and S63 are twin-scrolled and different exhaust manifold. The twin-scroll application also features cylinder deactivation. [6]

As part of the agreement with Mercedes-AMG since 2013, Aston Martin installs the M177 engines in the DB11 V8 and DB11 Volante (2017–), Vantage (2018–), DBX (2021–) and DB12 (2023–). [7] [8] [9] [10]

In late 2019, the 48V system used in the M176 was added to the M177 engines for extra performance, improved fuel consumption, and reduced emission output. [11]

Applications

ModelYears
Mercedes-AMG C 63 and C 63 S (W205) 2015–2021
Mercedes-AMG E 63 4MATIC+ and E 63 S 4MATIC+ (W213) 2016–2022
Mercedes-AMG S 63 Coupe 4MATIC (C217) and S 63 Cabriolet 4MATIC (A217) 2018–2020
Mercedes-AMG S 63 4MATIC and S 63 (W222/V222) 2017–2020
Mercedes-AMG GT 63 4MATIC+, GT 63 S 4MATIC+, and GT 63 S E Performance (X290) 2018–
Mercedes-AMG G 63 (W463, second generation) 2019–
Mercedes-AMG GLC 63 4MATIC, GLC 63 4MATIC Coupé, GLC 63 S 4MATIC, and GLC 63 S 4MATIC Coupé (X253) 2018–
Mercedes-AMG GLE 63 4MATIC+ and 63 S 4MATIC+ (X167) with ISG) 2020–
Mercedes-AMG GLS 63 4MATIC+ (X167) with ISG 2020–
Mercedes-Maybach GLS 600 (X167) with ISG 2020–
Mercedes-AMG SL 55 4MATIC+, SL 63 4MATIC+ (R232) 2022–
Mercedes-AMG S 63 E Performance (W223) 2022–
Brabus Rocket 900 "ONE OF TEN" (enlarged to 4.4 L)2020–
Aston Martin DB11 V8 and DB11 Volante 2017–
Aston Martin Vantage V8, Vantage F1 Edition and Vantage AMR 59 2018–
Aston Martin DBX V8 and DBX707 2021–
Aston Martin DB12 2023–

M178

The M178 is the second variation in the family, geared toward higher performance and motorsport. The 340 and 375 kW (462 and 510 PS; 456 and 503 hp) versions were introduced in Mercedes-AMG GT (C190). The power has been upgraded several times. Brabus offers PowerXtra B40S-800, a performance upgrade kit for AMG GT. [12] The kit increases the output to 588 kW (799 PS; 789 hp) at 6,500 rpm and 1,000 N⋅m (738 lb⋅ft) at 1,750-4,500 rpm.

Specifications

Applications

ModelYearsPowerTorque
Mercedes-AMG GT (C190)03/2015–03/2017340 kW (462 PS; 456 hp) at 6,000 rpm600 N⋅m (443 lb⋅ft) at 1,600–5,000 rpm
07/2017–07/2020350 kW (476 PS; 469 hp) at 6,000 rpm630 N⋅m (465 lb⋅ft) at 1,700–5,000 rpm
07/2020–390 kW (530 PS; 523 hp) at 5,500–6,750 rpm670 N⋅m (494 lb⋅ft) at 2,100–5,250 rpm
Mercedes-AMG GT S (C190)03/2015–03/2017375 kW (510 PS; 503 hp) at 6,250 rpm650 N⋅m (479 lb⋅ft) at 1,750–4,750 rpm
03/2017–07/2020384 kW (522 PS; 515 hp) at 6,250 rpm670 N⋅m (494 lb⋅ft) at 1,800–5,000 rpm
Mercedes-AMG GT C (C190)03/2017–410 kW (557 PS; 550 hp) at 5,750–6,750 rpm680 N⋅m (502 lb⋅ft) at 1,900–5,750 rpm
Mercedes-AMG GT R (C190)430 kW (585 PS; 577 hp) at 6,250 rpm700 N⋅m (516 lb⋅ft) at 1,900–5,500 rpm
Mercedes-AMG GT Black Series (C190) (Engine Code M178 LS2)07/2020–537 kW (730 PS; 720 hp) at 6,700–6,900 rpm800 N⋅m (590 lb⋅ft) at 2,000–6,000 rpm
Mercedes-AMG GT Track Series (C190) (Engine Code M178 LS2)03/2022540 kW (734 PS; 724 hp) at 6,700–6,900 rpm850 N⋅m (627 lb⋅ft) at 2,000–6,000 rpm
Aston Martin Valhalla (Engine Code M178 LS2)2023–551.5 kW (750 PS; 740 hp)

See also

List of Mercedes-Benz engines

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