The Mercedes-Benz M113.967 is a 5,439 cc, V8 petrol engine produced between 1999 and 2000. It forms part of the M113 engine family, featuring a 32-valve DOHC configuration and sequential multi-point fuel injection (SIMPLE). This naturally aspirated design delivers 235 kW (320 PS) at 5,500 rpm and 460 Nm of torque at 3,000 rpm, offering high-performance capability for luxury and grand tourer applications.
Fitted primarily to the W220 S-Class and C215 CL-Class models, including the S 55 and CL 55, the M113.967 was engineered for smoothness, strong low-end pull, and effortless highway cruising. Emissions compliance was achieved through a three-way catalytic converter and closed-loop lambda control system, meeting Euro 2 standards across its production run. The 90-degree V8 layout provided inherent balance and reduced vibration compared to inline engines.
One documented concern involves premature wear of the intake camshaft lobes, particularly in vehicles with extended oil change intervals or use of non-compliant lubricants. This issue, referenced in Mercedes-Benz Service Bulletin 07-0501-98, is attributed to marginal lubrication at high-load points in the valvetrain. Later M113 series revisions incorporated updated camshaft materials and oil pump calibration to mitigate this risk, with the M113.967 representing a transitional design before full implementation.
Production years 1999–2000 meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/5685).
The Mercedes-Benz M113.967 is a 5,439 cc V8 petrol engine engineered for luxury and performance models (1999–2000). It combines a 32-valve DOHC valvetrain with sequential fuel injection to deliver smooth, linear power delivery. Designed to meet Euro 2 standards, it balances refinement and performance in naturally aspirated form.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 5,439 cc | |
| Fuel type | Petrol | |
| Configuration | V8, DOHC, 32-valve | |
| Aspiration | Naturally aspirated | |
| Bore × stroke | 97.0 mm × 92.0 mm | |
| Power output | 235 kW (320 PS) @ 5,500 rpm | |
| Torque | 460 Nm @ 3,000 rpm | |
| Fuel system | Sequential multi-point fuel injection (SIMPLE) | |
| Emissions standard | Euro 2 | |
| Compression ratio | 10.0:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Not applicable | |
| Timing system | Timing chain (dual-row, non-interference design) | |
| Oil type | MB 229.3 (SAE 10W-60) or equivalent ACEA A3/B3 | |
| Dry weight | 205 kg |
The naturally aspirated V8 design offers smooth power delivery and low maintenance complexity but requires adherence to 15,000 km oil change intervals using MB 229.3 specification oil to prevent camshaft lobe wear. Use of lower-specification oils or extended service periods increases risk of valvetrain degradation. Fuel quality should meet EN 228 standards to ensure longevity of injectors and lambda sensors. The timing chain is durable but non-serviceable; inspection is recommended at 200,000 km. Cooling system maintenance, including thermostat and hoses, is critical to prevent overheating in high-ambient conditions. Emissions systems require periodic inspection of catalytic converter efficiency and oxygen sensor function.
Oil Specs: Requires MB 229.3 (10W-60) specification (Mercedes-Benz SIB 07-0501-98). Compatible with ACEA A3/B3 oils.
Emissions: Euro 2 certification applies to all models (1999–2000) (VCA Type Approval #VCA/EMS/5685).
Power Ratings: Measured under DIN 70020 standards. Output consistent across all markets (Mercedes-Benz Group PT-1999).
Mercedes-Benz Technical Information System (TIS): Docs A113451, A113521, SIB 07-0501-98
VCA Type Approval Database (VCA/EMS/5685)
DIN Standards: DIN 70020 Engine Power Measurement
The Mercedes-Benz M113.967 was used across Mercedes-Benz's W220/C215 platforms with longitudinal mounting and no external licensing. This engine received platform-specific adaptations-intake manifold tuning in the C215 and revised ECU mapping in facelifted W220 units-and from 1999 the updated W220 received revised camshaft profiles to improve low-end torque, creating partial interchange limits. All adaptations are documented in OEM technical bulletins.
Locate the engine code stamped vertically on the right-side cylinder block, near the exhaust manifold (Mercedes-Benz TIS A113451). The 10th digit of the VIN indicates model year, and the 8th digit identifies engine type ('Z' for M113.967). Post-1999 facelift models have black cam covers; pre-facelift units used silver covers. Critical differentiation from M113.960: M113.967 has a larger displacement (5,439 cc vs 4,246 cc) and higher torque output. Service parts require VIN and production date verification—camshafts and lifters from pre-1999 models are not interchangeable with post-facelift variants due to profile and material changes (Mercedes-Benz SIB 07-0501-98).
The M113.967's primary reliability risk is intake camshaft lobe wear, with elevated incidence in vehicles with extended service intervals. Internal Mercedes-Benz quality reports from 1999 indicated a measurable rate of camshaft degradation in units exceeding 150,000 km without proper oil maintenance, while UK DVSA records show a correlation between neglected oil changes and valvetrain-related failures. High engine loads and stop-start driving increase wear rates, making oil specification and interval adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (1999-2000) and UK DVSA failure statistics (1999-2002). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MERCEDES-BENZ M113967.
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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