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 2,500 rpm.
Fitted to the C190 GT 63, W213 E 63 AMG, and W222 S 63 AMG, the M 177.982 was engineered for dynamic driving engagement and high-speed stability. Its driving character emphasized immediate throttle response, aggressive acceleration, and precise handling integration. Emissions compliance was achieved through dual three-way catalytic converters and closed-loop lambda control, allowing it to meet Euro 6b standards across its production run.
One documented reliability concern is premature wear of the high-pressure fuel pump, particularly in early production units (2017–2019). This issue, referenced in Mercedes-Benz Technical Service Bulletin 01.0177.01, is linked to inadequate lubrication within the pump due to fuel quality variations. From 2020, Mercedes-Benz introduced a revised fuel pump with improved internal coatings and tighter tolerances to enhance durability.
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 twin-turbo V8 provides aggressive, track-ready performance ideal for spirited driving but requires consistent use of premium high-octane petrol (RON 98) to prevent pre-ignition and maintain turbocharger longevity. SAE 0W-40 MB 229.52 oil is critical due to its high-temperature stability and protection for the timing chain and turbo bearings. Extended idle periods should be minimized to ensure consistent oil pressure to the upper engine. The HFM-SFI fuel system demands high fuel quality; low-octane or high-ethanol blends can cause premature high-pressure pump wear. Pre-2020 engines should be inspected for fuel pump wear per Mercedes-Benz SIB 01.0177.01. Ignition system maintenance (plugs, coils) is essential to prevent misfires and catalytic converter damage.
Oil Specs: Requires SAE 0W-40 MB 229.52 specification (Mercedes-Benz SIB 01.0177.01). Compatible with ACEA A3/B4 standards.
Emissions: Euro 6b certification applies to all production years (2017–2023) (VCA Type Approval #VCA/EMS/8901).
Power Ratings: Measured under DIN 70020 standards. Output consistent across fuel qualities meeting RON 95 minimum (Mercedes-Benz TIS Doc. A73025).
Mercedes-Benz Technical Information System (TIS): Docs A72150, A72410, A73025, SIB 01.0177.01
VCA Type Approval Database (VCA/EMS/8901)
ISO 1585:1992 Road vehicles — Test method for the measurement of net power
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.
Locate the engine code stamped horizontally on the front timing cover (Mercedes-Benz TIS A72200). The 7th and 8th VIN digits indicate engine type ('63' for M177 series). Pre-2020 models have silver cam covers with black rubber hoses; post-2020 units use black cam covers. Critical differentiation from M178: M177.982 has a wet-sump lubrication system, while M178 uses a dry-sump design for higher-RPM applications. Service parts require production date verification - high-pressure fuel pumps for engines before 06/2019 are incompatible with later units due to internal design changes (Mercedes-Benz SIB 01.0177.01).
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.
Find answers to most commonly asked questions about MERCEDES-BENZ M177982.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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