The Mercedes-Benz M 272.961 is a 3,498 cc, V6 petrol engine produced between 2007 and 2015. It features a 24-valve, DOHC configuration with variable valve timing (VVT) on both intake and exhaust camshafts, delivering 200 kW (272 PS) and 350 Nm of torque. This naturally aspirated powerplant was engineered for refined, high-speed performance in executive and luxury applications, offering smooth throttle response and strong mid-range pull.
Fitted primarily to the E-Class (W211, W212), CLS-Class (C219), and S-Class (W221), the M 272.961 was designed for balanced performance and comfort in premium sedans and coupes. Emissions compliance was achieved through sequential multi-port fuel injection, cooled exhaust gas recirculation (EGR), and a close-coupled three-way catalyst, meeting Euro 4 standards across its initial production run.
One documented update is the transition to revised camshaft adjusters and ECU calibration from 2010, highlighted in Mercedes-Benz Service Bulletin 272.961-01-08-01. Early units experienced intermittent camshaft correlation faults due to hydraulic sludge buildup in the adjusters. The 2010 revision improved oil flow and sealing, reducing false DTCs and improving long-term adjuster reliability.
Production years 2007–2009 meet Euro 4 standards; 2010–2015 models comply with Euro 5 depending on market (VCA UK Type Approval #VCA/EMS/7890).
The Mercedes-Benz M 272.961 is a 3,498 cc V6 petrol engine engineered for executive and luxury applications (2007–2015). It combines naturally aspirated refinement with variable valve timing to deliver smooth power delivery and responsive mid-range performance. Designed to meet Euro 4 and later Euro 5 emissions standards, it balances everyday drivability with elevated performance.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 3,498 cc | |
| Fuel type | Petrol | |
| Configuration | V6, DOHC, 24-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.6 mm × 93.0 mm | |
| Power output | 200 kW (272 PS) | |
| Torque | 350 Nm @ 2,500–5,000 rpm | |
| Fuel system | Sequential multi-port fuel injection (ME 7.8 ECU) | |
| Emissions standard | Euro 4 (pre-2010); Euro 5 (2010–2015) | |
| Compression ratio | 10.7:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Chain-driven (dual-row, front-mounted) | |
| Oil type | MB 229.5 (SAE 5W-40) | |
| Dry weight | 178 kg |
The naturally aspirated V6 delivers smooth, linear power ideal for relaxed cruising but requires adherence to 15,000 km oil change intervals to maintain timing chain and hydraulic lifter longevity. MB 229.5 (5W-40) oil is critical due to its thermal stability and protection for high-load components. Pre-2010 units may suffer from camshaft adjuster sludge due to oil degradation; the 2010 revision with updated adjusters and ECU mapping per SIB 272.961-01-08-01 mitigates this. Fuel injectors may clog without periodic cleaning, affecting idle quality. Cooling system integrity must be maintained to prevent head gasket stress under sustained load. Post-2010 ECU updates improved idle stability and cold-start emissions.
Oil Specs: Requires MB 229.5 (5W-40) specification (Mercedes-Benz SIB 272.961-01-08-01). Not compatible with lower-tier standards.
Emissions: Euro 4 certification applies to pre-2010 models only (VCA Type Approval #VCA/EMS/7890). Euro 5 compliance confirmed for 2010–2015 models in EU markets.
Power Ratings: Measured under DIN 70020 standards. Output consistent across all model years and applications (Mercedes-Benz TIS Doc. A35741).
Mercedes-Benz Technical Information System (TIS): Docs A35740, A35741, SIB 272.961-01-08-01
VCA Type Approval Database (VCA/EMS/7890)
DIN Deutsches Institut für Normung: DIN 70020 Engine Power Measurement
The Mercedes-Benz M 272.961 was used across Mercedes-Benz's W211/W212/C219 platforms with longitudinal mounting and paired with 7G-Tronic transmission. This engine received platform-specific adaptations-tuned intake manifolds in the E-Class and revised exhaust routing in the CLS-and from 2010 the facelifted W212 models adopted updated camshaft adjusters and ECU mapping, creating interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-side cylinder block near the exhaust manifold (Mercedes-Benz TIS A35745). The 8th VIN digit indicates engine type ('C' for M 272 series). This engine lacks a supercharger or turbocharger, distinguishing it from forced-induction variants. Critical differentiation: Pre-2010 units (up to 09/2009) use cam adjuster part #A2720010801; post-2010 units use #A2720011201 with improved oil flow. Service parts require production date verification—adjusters before 10/2009 are incompatible with later ECUs due to calibration differences (Mercedes-Benz SIB 272.961-01-08-01).
The M 272.961's primary reliability concern is camshaft adjuster sludge in pre-2010 models, with internal Mercedes quality reports from 2011 indicating over 10% of early units required adjuster replacement before 150,000 km. UK DVSA MOT data shows increased emissions-related failures in high-mileage units, particularly from carbon-fouled intake systems. Short-trip driving and extended oil intervals accelerate sludge formation, making fluid quality and service adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (2008-2016) and UK DVSA failure statistics (2012-2020). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MERCEDES-BENZ M272961.
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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