The Mercedes — Benz M271.910 is a 1,796 cc, inline — four petrol engine produced between 2004 and 2011. It features a dual overhead camshaft (DOHC) valvetrain with variable valve timing (VVT) on the intake camshaft and multi — point fuel injection (MPFI). Designed for compact and mid — size applications, it delivers 115 kW (156 PS) and 230 Nm of torque, providing balanced performance and refinement.
Fitted to models such as the W203 C — Class, W211 E — Class, and R171 SLK, the M27…
Production years 2004–2011 meet Euro 4 emissions standards .
The Mercedes-Benz M271.910 is a 1,796 cc inline-four petrol engine engineered for compact and mid-size platforms (2004–2011). It combines multi-point fuel injection with variable valve timing to deliver smooth power delivery and responsive throttle characteristics. Designed to meet Euro 4 standards, it balances everyday usability with fuel efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,796 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 82.0 mm × 85.0 mm | |
Power output | 115 kW (156 PS) @ 5,300 rpm | |
Torque | 230 Nm @ 2,700–4,300 rpm | |
Fuel system | Multi-point fuel injection (MPFI) | |
Emissions standard | Euro 4 | |
Compression ratio | 10.7:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Timing chain (double-row, front-mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 148 kg |
The Mercedes-Benz M271.910 was used across Mercedes-Benz's W203/W211/R171 platforms with longitudinal mounting. This engine received platform-specific adaptations-shortened intake manifolds in the R171 and revised cooling routing in the W211-and from 2008 the updated camshaft adjuster design was implemented across all applications, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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Field reports and technical service bulletins highlight component wear patterns under high-load operation. Adherence to manufacturer service intervals and approved fluid specifications is critical for long-term reliability.
Analysis derived from manufacturer technical service bulletins and industry workshop records. Repair procedures should follow manufacturer guidelines.
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The M271.910 offers smooth performance and good refinement, but early models (2004-2007) had reliability concerns, particularly camshaft adjuster failures. Later revisions (post-2008) improved adjuster durability, so well-maintained examples can be quite robust. Regular servicing and using high-quality oil (5W-40 MB 229.5) greatly aid longevity.
The biggest issues are camshaft adjuster wear (leading to startup rattle or VVT faults), intake carbon buildup affecting throttle response, and lambda sensor degradation causing poor fuel economy. Other complaints include coolant leaks from thermostat housing and occasional ignition coil failures. These are well-documented in Daimler service bulletins.
This 1.8L petrol engine was used across several Mercedes-Benz platforms. It appeared in the C-Class (W203), E-Class (W211), and SLK (R171) as the C 180 Kompressor, E 200 Kompressor, and SLK 200 Kompressor. Smart also used a transverse-adapted version in the Fortwo (W454) from 2007-2011.
Aftermarket ECU tuning is common on the M271910 platform, but increasing boost or altering engine parameters accelerates component wear, impacts emissions compliance, and may void vehicle warranties. Any modifications should be evaluated carefully by a qualified specialist.
Moderate. In a C 200 Kompressor (W203) from around 2005, typical consumption is ~9.5 L/100km (city) and ~6.2 L/100km (highway), or about 30 mpg UK combined. Real-world figures depend on driving style, but expect 28-34 mpg (UK) on mixed roads for a healthy M271.910. Premium fuel (RON 98) is recommended for optimal efficiency.
Yes. The M271 series is an interference engine. This means if the timing chain fails or jumps, pistons can collide with open valves, resulting in severe internal engine damage. That's why timing system maintenance is critical—any unusual noises should be investigated immediately.
Mercedes-Benz specifies a 5W-40 synthetic oil meeting MB 229.5 specification. Always use a high-quality oil designed for petrol engines and change it every 15,000 km or as per the manufacturer's schedule to ensure proper cam adjuster lubrication and prevent sludge buildup.
Comprehensive technical documentation and regulatory references
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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)
UK type-approval authority for automotive products.
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.
GOV.UK: Vehicle Approval
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