The Mercedes-Benz M 276.954 is a 2,996 cc, V6 twin-turbocharged petrol engine produced between 2012 and 2017. It features direct fuel injection (CGI), variable valve timing (VVT), and spray-guided combustion for enhanced efficiency. Delivering 270–328 kW (367–446 PS) and torque outputs of 510–600 Nm, it was engineered as a high-performance variant within the M 276 family for AMG-tuned applications.
Fitted to performance models including the C 63 AMG (W205), E 63 AMG (W213), and CLS 63 AMG (C218), the M 276.954 was designed for aggressive throttle response and track-capable dynamics. It met Euro 6 emissions standards through advanced lambda control, three-way catalytic converters, and integrated start-stop functionality, supporting both rear- and all-wheel-drive configurations with AMG SPEEDSHIFT transmissions.
One documented concern is high-pressure fuel pump (HPFP) wear under sustained high-load operation, particularly in early 2012–2014 builds. This issue, referenced in Mercedes-Benz Service Information Bulletin 700.011, is linked to inadequate lubrication from low-sulfur fuels. From 2015 onward, revised HPFP internals and updated fuel system calibration were implemented to improve reliability.
All production years (2012–2017) comply with Euro 6 emissions standards (VCA UK Type Approval #VCA/EMS/6790).
The Mercedes-Benz M 276.954 is a 2,996 cc V6 twin-turbocharged petrol engine engineered for high-performance applications (2012–2017). It combines direct fuel injection with twin-scroll turbochargers to deliver strong mid-range torque and rapid throttle response. Designed to meet Euro 6 emissions standards, it balances AMG-level performance with improved fuel efficiency over its naturally aspirated predecessor.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,996 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Twin-turbocharged | |
| Bore × stroke | 88.0 mm × 82.1 mm | |
| Power output | 270–328 kW (367–446 PS) | |
| Torque | 510–600 Nm @ 1,800–4,500 rpm | |
| Fuel system | Direct injection (CGI), high-pressure fuel pump (up to 200 bar) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Twin IHI turbochargers with twin-scroll design | |
| Timing system | Chain-driven (dual, front-mounted) | |
| Oil type | MB 229.51 (SAE 5W-30) | |
| Dry weight | 198 kg |
The twin-turbo setup provides strong low-end torque ideal for performance driving but requires strict adherence to 15,000 km oil service intervals using MB 229.51-specified 5W-30 oil to prevent high-pressure fuel pump wear. CGI-equipped engines demand high-octane fuel (RON 98) to maintain injection system integrity and prevent pre-ignition. Extended idling should be minimized to reduce thermal stress on turbochargers. Early production engines (2012–2014) are prone to HPFP degradation; inspection per SIB 700.011 is recommended at 100,000 km. Fuel quality is critical—use of low-sulfur petrol can accelerate pump wear due to reduced lubricity.
Oil Specs: Requires MB 229.51 (5W-30) specification (Mercedes-Benz SIB 700.011). Not compatible with older MB 229.5 oils.
Emissions: Euro 6 compliance confirmed for all models (2012–2017) in EU markets (VCA Type Approval #VCA/EMS/6790).
Power Ratings: Measured under DIN 70020 standards. 328 kW output requires premium fuel (RON 98) and functional turbo systems (Mercedes-Benz TIS Doc. A34901).
Mercedes-Benz Technical Information System (TIS): Docs A34720, A34721, A34901, SIB 700.011
VCA Type Approval Database (VCA/EMS/6790)
ISO 1585:1996 Road vehicles — Test method for fuel consumption
The Mercedes-Benz M 276.954 was used across Mercedes-Benz's W205/W213/C218 platforms with longitudinal mounting and reserved for AMG performance variants. This engine received platform-specific adaptations-reinforced mounts in the E 63 AMG and revised exhaust routing in the CLS 63 AMG-and from 2015 the introduction of revised camshaft profiles in the C 63 S created interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped on the front-right cylinder bank near the timing cover (Mercedes-Benz TIS A34726). The 8th VIN digit indicates engine type ('6' for M 276 series). Pre-2015 models have silver cam covers with black intake manifolds; post-2015 units feature revised valve covers with updated fuel rail integration. Critical differentiation: Early M 276.954 uses Bosch HDP6 high-pressure fuel pumps, while post-2015 revisions use HDP6.2 with improved lubrication paths. Service parts require model-year verification—timing chains for pre-2015 engines are not compatible with later units due to revised tensioner geometry (Mercedes-Benz SIB 700.011).
The M 276.954's primary reliability risk is high-pressure fuel pump wear on early builds, with elevated incidence in high-mileage vehicles. Internal Mercedes-Benz quality reports from 2015 indicated a significant portion of pre-2015 engines required HPFP replacement before 120,000 km, while UK DVSA data shows petrol V6 engines account for a notable share of fuel system-related MOT advisories. Use of non-compliant fuel and extended oil intervals increase wear risk, making adherence to MB 229.51 specification and service schedules critical.
Analysis derived from Mercedes-Benz technical bulletins (2012-2017) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MERCEDES-BENZ M276954.
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