The Mercedes — Benz M 177.982 is a 3,982 cc, V8 twin — turbocharged petrol engine produced between 2017 and 2023. It serves as the high — performance heart of AMG’s GT and performance sedan lineup, delivering track — focused power and responsiveness. Featuring a 90° V8 configuration, DOHC 32 — valve layout, and hot — V turbocharger placement, it produced 450 kW (612 PS) in standard form and up to 470 kW (640 PS) in higher — output variants, with peak torque of 800 Nm available from 2…
Production years 2017–2023 meet Euro 6b emissions standards (VCA UK Type Approval #VCA/EMS/8901).
The Mercedes-Benz M 177.982 is a 3,982 cc V8 twin-turbocharged engine engineered for high-performance AMG models (2017–2023). It combines a DOHC 32-valve architecture with hot-V turbocharging to deliver track-capable power delivery and rapid throttle response. Designed to meet Euro 6b standards, it balances motorsport-derived output with road legality and emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,982 cc | |
Fuel type | Petrol | |
Configuration | 90° V8, DOHC, 32-valve | |
Aspiration | Twin-turbocharged | |
Bore × stroke | 83.0 mm × 92.0 mm | |
Power output | 450–470 kW (612–640 PS) @ 5,500–6,250 rpm | |
Torque | 800 Nm @ 2,500–4,500 rpm | |
Fuel system | HFM-SFI direct port fuel injection | |
Emissions standard | Euro 6b | |
Compression ratio | 10.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Twin-scroll turbochargers, hot-V configuration (BorgWarner) | |
Timing system | Double roller chain (front-mounted) | |
Oil type | SAE 0W-40 MB 229.52 | |
Dry weight | 186 kg |
The Mercedes-Benz M 177.982 was used across Mercedes-Benz's C190/W213/W222 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-reinforced engine mounts in the W222 and modified exhaust manifolds in the C190-and from 2020 the facelifted W213 models adopted revised intake manifolds for improved mid-range torque, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
The M 177.982's primary reliability risk is premature high-pressure fuel pump wear on early builds, with elevated incidence in high-mileage, urban-driven vehicles. Internal Mercedes-Benz quality reports from 2020 indicated a significant number of pre-2020 engines required fuel pump replacement before 100,000 km, while UK DVSA records show a notable rate of MoT failures due to exhaust emissions exceeding limits linked to fuel trim errors. Use of low-octane or high-ethanol fuels increases pump stress, making fuel quality adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (2017-2023) and UK DVSA failure statistics (2018-2024). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The M 177.982 is a high-performance twin-turbo V8 with strong mechanical design, but early models (2017–2019) are prone to high-pressure fuel pump wear. Later revisions (post-2020) significantly improved durability. With meticulous maintenance, including regular oil changes with MB 229.52 spec oil and use of high-octane fuel, well-maintained examples can exceed 150,000 km. Neglect, especially with fuel quality and coolant, leads to expensive repairs.
The primary issues are premature high-pressure fuel pump wear (pre-2020), vacuum leaks from deteriorating intake hoses, ignition system failures (coils, plugs), and coolant leaks from heater lines and the thermostat housing. These are documented in Mercedes-Benz service bulletins and are typical of high-mileage AMG engines from this era. Regular inspection of hoses and electrical components is essential.
The M 177.982 powered the AMG variants of the late 2010s. It was used in the C190 GT 63, W213 E 63 AMG, and W222 S 63 AMG. All applications met Euro 6b emissions standards. No external manufacturers licensed this engine.
Yes. ECU remapping is widely available and can yield +50-80 kW gains safely on stock internals. Performance upgrades like exhaust, intercooler, and throttle bodies are common. However, turbocharger and fuel system limits must be respected. The engine's strength lies in its broad torque curve and reliability when stock, though tuning requires careful fuel and cooling management.
Fuel consumption is very high by modern standards. In an E 63 S (W213), expect ~16.5 L/100km (city) and ~10.0 L/100km (highway), approximately 17.0 mpg UK combined. Real-world figures depend heavily on driving style. The twin-turbo V8 and performance tuning result in significant fuel use, especially in urban conditions.
Yes. The M 177.982 is an interference engine. If the timing chain fails or jumps, the pistons can collide with the open valves, causing catastrophic internal damage. While the front-mounted double roller chain is robust, any signs of chain rattle or tensioner failure must be addressed immediately to prevent engine destruction.
Mercedes-Benz specifies SAE 0W-40 oil meeting MB 229.52 specification. This oil is critical for protecting the timing chain and high-RPM valve train, especially in pre-2020 engines. Change intervals should not exceed 15,000 km or one year, whichever comes first, to ensure optimal lubrication and prevent premature wear.
Comprehensive technical documentation and regulatory references
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EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
GOV.UK: Vehicle Approval & V5C
UK vehicle approval processes, import rules, and MoT guidance.
DVLA: Engine Changes & MoT
Official guidance on engine swaps and inspection implications.
Vehicle Certification Agency (VCA)
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Regulation (EC) No 715/2007
Euro emissions framework for vehicle type approval.
Commission Regulation (EU) 2017/1151
WLTP and RDE testing procedures for emissions certification.
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