The Mercedes — Benz M 111.947 is a 1,998 cc, inline — four naturally aspirated petrol engine produced between 1996 and 2000. It belongs to the M111 engine family, featuring a single overhead camshaft (SOHC), 16 — valve configuration, and electronic multi — point fuel injection (ME — SFI). This engine delivers 102 kW (139 PS), offering balanced performance and refinement for compact executive applications.
Fitted to models including the W202 C — Class, W210 E — Class, and Vit…
Production years 1996–2000 meet Euro 2 emissions standards (EC Directive 94/12/EC,.
The Mercedes-Benz M 111.947 is a 1,998 cc inline-four petrol engine engineered for compact and mid-size platforms (1996–2000). It combines SOHC valvetrain architecture with Bosch ME-SFI electronic fuel injection to deliver linear power delivery and daily drivability. Designed to meet Euro 2 emissions requirements, it balances performance with early OBD-II-compliant diagnostics and catalyst efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,998 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, SOHC, 16-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 88.0 mm × 82.1 mm | |
Power output | 102 kW (139 PS) @ 5,500 rpm | |
Torque | 190 Nm @ 4,200 rpm | |
Fuel system | Bosch ME-SFI electronic multi-point injection | |
Emissions standard | Euro 2 (EC Directive 94/12/EC) | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Chain-driven (single-row, tensioner-equipped) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 142 kg |
The Mercedes-Benz M 111.947 was used across Mercedes-Benz's W202, W210, and W639 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-fuel mixture tuning for automatic transmission pairings in the W210 and revised intake manifolds in the W202-and from 2000, the W203 C-Class transitioned to the M271 engine family, ending M111 production. 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 Mercedes-Benz technical bulletins (1996-2000) and UK DVSA historic failure statistics (2000-2010). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The M 111.947 is a robust engine when properly maintained, but pre-1998 models are prone to timing chain tensioner failure if oil changes are delayed or incorrect oil is used. Later revisions improved durability with a metal-backed tensioner. Regular servicing with correct 5W-40 API SL/CF oil and attention to the ME-SFI system are essential for long-term reliability.
The most common issues are timing chain tensioner wear, idle air control valve clogging, coolant leaks from the thermostat housing, and ignition coil degradation. These are documented in Mercedes-Benz service bulletins and technical forums. Preventive maintenance significantly reduces failure rates.
The M 111.947 was used in the W202 C 180, W210 E 200, and W639 Vito V 200 models from 1996 to 2000. It was the 16-valve SOHC variant of the M111 engine family, distinguished from the earlier 8-valve versions used in other 190 and 200 models.
Limited tuning potential exists. Modifications include performance camshafts, upgraded intake manifolds, and ECU remapping. However, the engine's SOHC design limits high-RPM output. Most owners prioritize reliability over modification due to parts availability and classic status.
Fuel consumption is moderate for its era. In a W202 C 180, typical figures are ~10.5 L/100km (city) and ~6.8 L/100km (highway), or approximately 27 mpg UK combined. Driving style and vehicle condition significantly affect real-world economy, with well-maintained examples achieving up to 32 mpg UK.
Yes. The M 111.947 is an interference engine. If the timing chain fails or skips, pistons can contact open valves, resulting in severe internal damage. Regular inspection of the chain and tensioner is crucial, especially on high-mileage engines.
Mercedes-Benz specifies SAE 5W-40 oil meeting API SL/CF specifications. Use of correct oil is critical to protect the timing chain tensioner from premature wear. Oil should be changed every 15,000 km or annually, whichever comes first, to ensure adequate lubrication and cooling.
Comprehensive technical documentation and regulatory references
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Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
EUR-Lex
EU emissions and type-approval regulations (e.g., CELEX:32007R0715, CELEX:32017R1151).
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
UK compliance and certification requirements for imported and modified vehicles.
VCA Certification Portal
Type-approval guidance and documentation.
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