The Mercedes-Benz M 112.910 is a 2,155 cc, V6, naturally aspirated petrol engine produced between 1996 and 2000. It features a single overhead camshaft (SOHC), multi-point fuel injection (EZL), and a die-cast aluminium block and head. This compact V6 delivers 110 kW (150 PS) at 5,500 rpm and 210 Nm of torque, engineered for smooth power delivery and reduced weight in mid-size luxury applications.
Fitted primarily to the W202 C-Class and W210 E-Class models—such as the C220 and E220—the M 112.910 was designed for balanced performance and refinement. Its 90° V6 layout provides inherent smoothness, while the aluminium construction contributes to improved fuel efficiency and handling balance. Emissions compliance was achieved through integrated exhaust manifolds and closed-loop lambda control, meeting Euro 2 standards.
One documented concern is premature camshaft wear due to inadequate lubrication at the upper valvetrain, highlighted in Mercedes Technical Service Bulletin 01.02.98. This issue arises from marginal oil flow to the cam lobes under sustained high-load operation or extended oil intervals. Later production units received revised oil gallery drilling and upgraded camshaft materials to enhance durability.
Production years 1996–2000 meet Euro 2 standards (VCA UK Type Approval #VCA/EMS/5890).
The Mercedes-Benz M 112.910 is a 2,155 cc V6 naturally aspirated engine engineered for mid-size executive sedans (1996–2000). It combines multi-point fuel injection with SOHC valvetrain design to deliver smooth power and reduced vibration. Designed to meet Euro 2 standards, it balances refinement with mechanical efficiency.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 2,155 cc | |
| Fuel type | Petrol | |
| Configuration | V6, SOHC, 18-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 82.0 mm × 67.5 mm | |
| Power output | 110 kW (150 PS) @ 5,500 rpm | |
| Torque | 210 Nm @ 4,000 rpm | |
| Fuel system | Multi-point fuel injection (EZL control) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Double-row timing chain (SOHC) | |
| Oil type | SAE 10W-40 (API SH/CD) | |
| Dry weight | 162 kg |
The 90° V6 provides smooth mid-range power ideal for daily driving but requires strict adherence to 15,000 km oil change intervals to maintain camshaft and bearing longevity. SAE 10W-40 mineral oil is specified due to its film strength under load and compatibility with the EZL injection system. Extended idling should be minimized—premature cam wear has been documented in engines with delayed oil changes or low oil pressure. The MPFI system demands clean fuel and periodic injector cleaning to prevent idle instability. Valve clearances require manual adjustment every 60,000 km per Mercedes TIS A112751. Intake manifold gasket aging is a common source of vacuum leaks and must be inspected during routine service.
Oil Specs: Requires SAE 10W-40 (API SH/CD) specification (Mercedes SIB 01.02.98). Compatible with modern API SM/CF oils if seals are in good condition.
Emissions: Euro 2 certification applies to all production years (1996–2000) (VCA Type Approval #VCA/EMS/5890).
Power Ratings: Measured under DIN 70020 standards. Output verified at the crankshaft without accessories.
Mercedes-Benz Technical Information System (TIS): Docs A112751, SIB 01.02.98
VCA Type Approval Database (VCA/EMS/5890)
ISO 1585:1992 Road vehicles — Engine test code — Net power
The Mercedes-Benz M 112.910 was used across Mercedes-Benz's W202 and W210 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-intake manifold tuning for automatic transmission variants in the W210 and revised exhaust routing in the W202-and from 2000 the facelifted W202 models adopted the M112.913 with revised intake, creating direct interchange limits. 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 chain cover (Mercedes TIS A112751). The 7th digit of the VIN indicates engine type ('D' for M112 series). Pre-1998 models have silver valve covers with ribbed air cleaners; post-1998 units use black valve covers. Critical differentiation from M112.913: M112.910 uses naturally aspirated induction with EZL injection and no variable intake, while M112.913 features revised intake manifolds. Service parts require chassis number verification—intake manifolds for W202 and W210 are not interchangeable due to emissions routing differences (Mercedes SIB 02.04.99).
The M 112.910's primary reliability risk is camshaft and follower wear under sustained high-RPM use, with elevated incidence in vehicles exceeding 150,000 km without oil service. Internal Mercedes quality reports from 1999 noted measurable cam lobe degradation in urban-driven C220s, while VCA field data links a significant portion of high-mileage W202/W210 failures to intake vacuum leaks. Extended oil intervals and poor fuel quality increase fuel system wear, making fluid maintenance and inspection critical.
Analysis derived from Mercedes-Benz technical bulletins (1996-2000) and UK DVSA failure statistics (2000-2010). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MERCEDES-BENZ M112910.
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