The Mercedes — Benz OM611LA is a 2,151 cc, inline — four, turbocharged diesel engine produced between 1998 and 2002. It features common — rail direct injection (CDI) and a Bosch CRS 2.0 high — pressure fuel system, delivering 75 kW (102 PS) at 4,200 rpm and 230 Nm of torque at 1,800 rpm. This compact and efficient engine was engineered for entry — level luxury sedans and executive wagons, combining modern injection technology with refined drivability.
Fitted to the W210 E — Clas…
Production years 1998–2002 meet Euro 3 standards .
The Mercedes-Benz OM611LA is a 2,151 cc inline-four turbocharged diesel engineered for compact executive vehicles (1998–2002). It combines common-rail direct injection with a variable geometry turbocharger to deliver smooth, quiet operation and strong low-end torque. Designed to meet Euro 3 standards, it balances refinement with long-term reliability under proper maintenance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 2,151 cc | |
Fuel type | Diesel | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged | |
Bore × stroke | 88.0 mm × 88.3 mm | |
Power output | 75 kW (102 PS) @ 4,200 rpm | |
Torque | 230 Nm @ 1,800 rpm | |
Fuel system | Bosch CRS 2.0 common-rail (up to 1,600 bar) | |
Emissions standard | Euro 3 | |
Compression ratio | 18.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single variable-geometry turbo (KKK K16) | |
Timing system | Double-row chain-driven (DOHC) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 178 kg |
The Mercedes-Benz OM611LA was used across Mercedes-Benz's W210/V220 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-reinforced engine mounts in the W210 and modified cooling routing in the Vito-and from 2000 the revised HPFP calibration improved fuel system durability, creating service part 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.
The most common questions about engine codes, what they mean, how to find them and how this database works
Yes, the OM611LA is durable when properly maintained. Early models (1998–1999) are prone to HPFP failure if service procedures are not followed, but post-2000 revisions significantly improved fuel system durability. With regular oil changes using MB 229.3 spec oil and adherence to fuel filter replacement intervals, many examples exceed 250,000 km.
The most documented issues are high-pressure fuel pump failure (especially pre-2000), turbo actuator sticking, EGR/DPF clogging, and timing chain guide wear. These are all addressed in Daimler service documentation, with the HPFP issue being the most critical if not managed proactively.
The OM611LA was used exclusively in the W210 E-Class (E200 CDI, 1998–2002) and V220 Vito (200 CDI, 1999–2002). It replaced earlier OM604 variants and was not used in any other Mercedes platforms or licensed to other manufacturers.
Aftermarket ECU tuning is common on the OM611LA 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.
In real-world conditions, the OM611LA achieves approximately 6.8–7.5 L/100km (42–38 mpg UK) in the E200 CDI. Highway cruising can reach up to 45 mpg UK. Fuel economy is consistent due to precise common-rail injection and conservative tuning.
Yes. The OM611LA is an interference engine. If the timing chain fails, pistons may contact valves, causing severe internal damage. Timing chain inspection is recommended at 200,000 km or if wear is detected.
Mercedes specifies 5W-40 oil meeting MB 229.3 standard. This synthetic oil is essential for protecting turbocharger bearings and maintaining hydraulic stability in the common-rail system. Oil changes should occur every 15,000–20,000 km or annually to prevent sludge and wear.
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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