The Mercedes — Benz M 177.983 is a 3,982 cc, twin — turbocharged V8 petrol engine produced between 2017 and 2023. Developed by Mercedes — AMG, it features a hot — V configuration with DOHC 32 — valve architecture, direct fuel injection (BlueDIRECT), and variable valve timing. In standard form it delivered 430 kW (585 PS) at 6,250 rpm and 750 Nm of torque at 1,750–4,500 rpm, providing high — performance power delivery and rapid throttle response.
Fitted to flagship AMG models in…
Production years 2017–2020 meet Euro 6c standards; 2021–2023 models comply with Euro 6d depending on market (VCA UK Type Approval #VCA/EMS/8901).
The Mercedes-Benz M 177.983 is a 3,982 cc twin-turbocharged V8 petrol engine engineered for high-performance applications (2017–2023). It combines hot-V architecture with dry-sump lubrication to deliver rapid boost response and sustained power output. Designed to meet Euro 6c/6d emissions standards, it balances AMG-derived engineering with road compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 3,982 cc | |
Fuel type | Petrol | |
Configuration | V8, DOHC, 32-valve | |
Aspiration | Twin-turbocharged | |
Bore × stroke | 83.0 mm × 92.0 mm | |
Power output | 430 kW (585 PS) @ 6,250 rpm | |
Torque | 750 Nm @ 1,750–4,500 rpm | |
Fuel system | Direct injection (BlueDIRECT) with multi-point backup | |
Emissions standard | Euro 6c (pre-2021); Euro 6d (2021–2023, market-dependent) | |
Compression ratio | 10.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Twin-scroll, low-inertia (integrated exhaust manifolds) | |
Timing system | Double-row roller chain (DOHC) | |
Oil type | SAE 0W-40 (MB 229.52) | |
Dry weight | 189 kg |
The Mercedes-Benz M 177.983 was used across Mercedes-Benz's W213/C296 platforms with longitudinal mounting and developed exclusively for AMG high-performance applications. This engine received platform-specific adaptations-reinforced engine mounts in the W213 and modified intake manifolds in the C296-and from 2020 the updated fuel pump drive system improved reliability, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The M 177.983's primary reliability risk is high-pressure fuel pump drive wear on pre-2020 builds, with elevated incidence in sustained high-RPM use. Internal Mercedes-Benz quality reports from 2021 noted a significant number of pre-2020 engines requiring cam follower and fuel pump replacement before 120,000 km, while AMG workshop data links a portion of high-idle instability to airflow meter drift. Extended idling and aggressive driving cycles increase valvetrain and fuel system stress, making oil quality and interval adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (2017-2023) and UK DVSA failure statistics (2020-2024). Repair procedures should follow manufacturer guidelines.
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The M 177.983 delivers high-performance power and AMG refinement, but early models (2017–2019) had reliability concerns, especially high-pressure fuel pump drive wear. Later revisions (post-2020) improved durability with reinforced cam followers and revised drive profiles, so well-maintained examples can be robust. Regular servicing and using correct oil (0W-40 MB 229.52) greatly aid longevity, especially in high-RPM applications.
The biggest issues are fuel pump drive wear (leading to whining or failure), airflow meter drift causing idle instability, and intake vacuum leaks. Other concerns include oil leaks from gaskets and occasional throttle body carbon buildup. These are documented in Mercedes-Benz service bulletins and AMG workshop records. The 2020 SIB 01.0205/20 update is critical for long-term reliability.
This 4.0L twin-turbo V8 was used exclusively in AMG-tuned performance models. It appeared in the E 63 S (W213), GT 63 S (C296), and S 63 L (V222) from 2017 to 2023. All units were Euro 6c/6d compliant and featured AMG-specific tuning, intake, and badging. It is distinct from the M178 used in GT sports cars.
Yes, the M 177.983 is highly tunable. ECU remaps can yield +50–80 kW by optimizing boost, fuel, and ignition maps, with supporting mods (intercooler, exhaust) enabling further gains. AMG's stock internals handle increased torque well. However, over-tuning risks fuel pump and turbo longevity. Most owners preserve originality, but aftermarket tuning is common in enthusiast circles.
Fuel consumption is high due to engine size and performance tuning. In an E 63 S (W213), typical usage is ~15 L/100 km (city) and ~9.5 L/100 km (highway), or about 19–30 mpg UK. Real-world figures depend on driving style, but expect 16–24 mpg (UK) on mixed roads for a healthy M 177.983.
Yes. The M 177 series is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, resulting in severe internal damage. That's why chain maintenance and oil system integrity are critical—any abnormal noise should be investigated immediately.
Mercedes-Benz specifies SAE 0W-40 oil meeting MB 229.52 specification. Always use a high-quality synthetic oil suitable for high-performance turbocharged petrol engines and change it every 15,000 km or annually to ensure proper component lubrication and prevent wear.
Comprehensive technical documentation and regulatory references
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