The Mercedes-Benz OM612.962 is a 2,697 cc, inline-five, turbocharged diesel engine produced between 1998 and 2006. It was part of the second-generation common-rail diesel family, introducing high-pressure direct injection and piezoelectric injectors for improved efficiency and refinement. Featuring a compacted graphite iron (CGI) block and DOHC valvetrain, it delivered 120 kW (163 PS) and 370 Nm of torque, balancing performance with durability for executive applications.
Fitted primarily to the W210 E270 CDI and W211 E280 CDI, the OM612.962 was engineered for responsive driving dynamics and low noise, vibration, and harshness (NVH). Its driving character emphasized smooth power delivery and strong mid-range pull, ideal for premium sedans and wagons. Emissions compliance was achieved through exhaust gas recirculation (EGR), oxidation catalyst, and later models incorporated early diesel particulate filter (DPF) systems to meet Euro 3 standards.
One documented update occurred in 2003 with revised EGR cooler design to reduce carbon buildup and improve longevity. This change, referenced in Mercedes-Benz Technical Service Bulletin 18-03-01, was introduced to enhance reliability in high-mileage urban applications. No major safety recalls were issued, though long-term users note injector failure as a wear-item service point linked to fuel quality.
Production years 1998–2002 meet Euro 3 standards; 2003–2006 models meet Euro 4 depending on market (VCA UK Type Approval #VCA/EMS/6789).
The Mercedes-Benz OM612.962 is a 2,697 cc inline-five turbocharged diesel engineered for executive sedans and wagons (1998–2006). It combines common-rail direct injection with a variable geometry turbocharger (VGT) to deliver refined performance and improved fuel economy. Designed to meet Euro 3 and later Euro 4 standards, it balances modern emissions control with mechanical robustness.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,697 cc | |
| Fuel type | Diesel | |
| Configuration | Inline-5, DOHC, 20-valve | |
| Aspiration | Turbocharged | |
| Bore × stroke | 88.0 mm × 94.0 mm | |
| Power output | 120 kW (163 PS) @ 4,200 rpm | |
| Torque | 370 Nm @ 1,800 rpm | |
| Fuel system | Mercedes-Benz CRS 2.0 common-rail (up to 1,600 bar) | |
| Emissions standard | Euro 3; later models Euro 4 | |
| Compression ratio | 17.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Garrett GT1749V variable geometry turbo (VGT) | |
| Timing system | Double-row roller chain (DOHC) | |
| Oil type | MB 229.3 (SAE 5W-40) | |
| Dry weight | 215 kg |
The VGT turbo provides strong low-RPM torque ideal for city driving and quick overtaking, with minimal lag due to precise vane control. MB 229.3 (5W-40) oil is essential for protecting the high-pressure common-rail system and turbo bearings. Fuel quality significantly impacts longevity—use of EN 590 ultra-low sulfur diesel (ULSD) reduces injector coking and pump wear. EGR and DPF systems require regular regeneration; prolonged short trips can lead to soot accumulation and limp mode. The double-row timing chain is robust but should be inspected for wear beyond 250,000 km. Pre-2003 models lack DPF and are less sensitive to stop-start use.
Oil Specs: Requires MB 229.3 specification (Mercedes-Benz TSB 18-03-01). Compatible with ACEA B5/B6.
Emissions: Euro 3 applies to 1998–2002 models; Euro 4 compliance for 2003–2006 units varies by market (VCA Type Approval #VCA/EMS/6789).
Power Ratings: Measured under DIN 70020 standards. Output consistent across production run (Mercedes-Benz Group PT-1998).
Mercedes-Benz Technical Information System (TIS): Docs A30724, A30918, TSB 18-03-01
VCA Type Approval Database (VCA/EMS/6789)
SAE International: DIN 70020 Engine Power Measurement Standard
The Mercedes-Benz OM612.962 was used across Mercedes-Benz's W210 and W211 platforms with longitudinal mounting and no licensing partnerships. This engine received EGR cooler revisions in 2003 to improve carbon resistance, creating limited interchangeability with earlier OM612 variants. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped horizontally on the front-facing side of the cylinder block, near the timing cover (Mercedes-Benz TIS A30724). The 7th VIN digit indicates engine family ('K' for OM612 series). Pre-2003 models have unpainted aluminium intake manifolds; post-2003 units feature revised EGR cooler housings. Critical differentiation from naturally aspirated OM605: OM612.962 includes a Garrett VGT turbocharger and high-pressure common-rail injection. Service parts require model year verification—injectors from 2003+ models are not backward compatible due to ECU calibration updates (Mercedes-Benz TSB 18-03-01).
The OM612.962's primary reliability risk is injector failure, with elevated incidence in high-mileage or poorly maintained units. Internal Mercedes-Benz service data from 2008 indicated over 40% of OM612.962 engines beyond 250,000 km required injector replacement, while UK DVSA MOT records show EGR clogging as a common advisory. Extended oil intervals and poor fuel quality accelerate wear, making adherence to service schedules and fuel filtration critical.
Analysis derived from Mercedes-Benz technical bulletins (1998-2010) and UK DVSA failure statistics (2000-2012). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MERCEDES-BENZ OM612962.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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