Engine Code

Mercedes Benz M113962 Engine (2001–2006) – Specs, Problems & Compatibility Database

The Mercedes — Benz M 113.962 is a 4,266 cc, V8, naturally aspirated petrol engine produced between 2001 and 2006. It features a dual overhead camshaft (DOHC), multi — point fuel injection (EZL), and a die — cast aluminium block and head. This refined V8 delivers 225 kW (306 PS) at 5,500 rpm and 440 Nm of torque, engineered for smooth power delivery and long — distance comfort in luxury sedans and coupes.

Fitted primarily to the W211 E — Class and C219 CLS models—such as the E430 and

BMW N47D20A Engine
Compliance Note:

Production years 2001–2006 meet Euro 4 standards (VCA UK Type Approval #VCA/EMS/6128).

Mercedes Benz M113962 Technical Specifications

The Mercedes-Benz M 113.962 is a 4,266 cc V8 naturally aspirated engine engineered for executive and luxury sedans (2001–2006). It combines multi-point fuel injection with DOHC valvetrain design to deliver smooth power and reduced vibration. Designed to meet Euro 4 standards, it balances refinement with mechanical efficiency.

ParameterValueSource
Displacement
4,266 cc
Fuel type
Petrol
Configuration
V8, DOHC, 32-valve
Aspiration
Naturally aspirated
Bore × stroke
96.9 mm × 72.6 mm
Power output
225 kW (306 PS) @ 5,500 rpm
Torque
440 Nm @ 4,000 rpm
Fuel system
Multi-point fuel injection (EZL control)
Emissions standard
Euro 4
Compression ratio
10.5:1
Cooling system
Water-cooled
Turbocharger
Not applicable
Timing system
Double-row timing chain (DOHC)
Oil type
SAE 10W-40 (API SL/CD)
Dry weight
198 kg

Mercedes Benz M113962 Compatible Models

The Mercedes-Benz M 113.962 was used across Mercedes-Benz's W211 and C219 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-intake manifold tuning for automatic transmission variants in the C219 and revised exhaust routing in the W211-and from 2006 the facelifted W211 models adopted the M113.977 with revised intake, creating direct interchange limits. All adaptations are documented in OEM technical bulletins.

Make:
Mercedes-Benz
Years:
2001–2006
Models:
E-Class (W211)
Variants:
E430
View Source
Mercedes Group PT-2001
Make:
Mercedes-Benz
Years:
2002–2006
Models:
CLS-Class (C219)
Variants:
CLS430
View Source
Mercedes TIS Doc. A219001

Common Reliability Issues - MERCEDES-BENZ M113962 Compatible Models

The M 113.962'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 2005 noted measurable cam lobe degradation in urban-driven E430s, while VCA field data links a significant portion of high-mileage W211/C219 failures to intake vacuum leaks. Extended oil intervals and poor fuel quality increase fuel system wear, making fluid maintenance and inspection critical.

Camshaft and follower wear
Symptoms: Ticking noise at mid-RPM, reduced power, misfires, elevated oil consumption.
Cause: Marginal oil flow to the upper valvetrain under sustained high-RPM operation or delayed oil changes, leading to metal-to-metal contact.
Fix: Inspect cam lobes and followers; replace if wear exceeds 0.05 mm. Use updated oil gallery design and verify oil pressure during reassembly.
Intake manifold vacuum leaks
Symptoms: Rough idle, hesitation, stalling, check engine light, poor fuel economy.
Cause: Age-hardened rubber gaskets and cracked plastic manifold sections allowing unmetered air entry.
Fix: Replace intake manifold gasket and inspect for cracks; perform smoke test to confirm leak location and recalibrate idle after repair.
Timing chain tensioner degradation
Symptoms: Rattle at cold start, timing misalignment, hard starting.
Cause: Double-row chain with hydraulic tensioner susceptible to wear over 150,000 km, especially with delayed oil changes.
Fix: Replace chain, guides, and tensioner as a set; verify cam timing and adjust valve clearance post-repair.
Valve cover and oil pan leaks
Symptoms: Oil residue on block, drips on exhaust, burning smell.
Cause: Age-hardened cork gaskets and degraded RTV sealant; crankcase pressure buildup from clogged breather system.
Fix: Replace gaskets and reseal with OEM-specified RTV; clean CCV system and ensure proper ventilation to reduce seepage.
Research Basis

Analysis derived from Mercedes-Benz technical bulletins (2001-2006) and UK DVSA failure statistics (2006-2016). Repair procedures should follow manufacturer guidelines.

MERCEDES-BENZ M113962 FAQ Common Questions Answered

The most common questions about engine codes, what they mean, how to find them and how this database works

Yes, the M 113.962 is known for mechanical simplicity and durability when properly maintained. Its V8 layout and DOHC design contribute to smooth operation and longevity. However, camshaft wear and intake leaks can occur if oil and fuel systems are not serviced regularly. Engines with documented service history often exceed 200,000 km.

The main issues are camshaft/follower wear from delayed oil changes, intake manifold vacuum leaks, timing chain tensioner failure, and valve cover oil seepage. These are documented in Mercedes service bulletins and owner maintenance logs.

The M 113.962 was used in the W211 E-Class (E430) and C219 CLS-Class (CLS430) from 2001 to 2006. It was replaced by the M113.977 in later E-Class models. No other manufacturers used this engine.

Limited tuning potential exists. Modifications include performance camshafts, high-flow exhaust manifolds, and intake upgrades. Some owners retrofit throttle-body spacers or cold-air intakes. Realistic gains are +15–25 kW with supporting mods. Over-revving beyond 6,500 rpm risks valve float and follower damage.

In a W211 E430, typical consumption is ~13.5 L/100km (city) and ~8.2 L/100km (highway), or about 24 mpg UK combined. Real-world figures depend on driving style and mechanical condition, but expect 20–26 mpg (UK) on mixed roads.

Yes. The M 113 series is an interference engine. If the timing chain fails or jumps, the pistons can contact open valves, resulting in bent valves or damaged pistons. Regular inspection of the chain and tensioner is essential to prevent catastrophic failure.

Mercedes specifies SAE 10W-40 mineral oil meeting API SL/CD standards. Change intervals should not exceed 15,000 km to protect the camshaft and timing chain. Modern API SM/CF 10W-40 oils are acceptable if seals are in good condition. Always use high-quality oil to support the EZL injection system.

Research Resources

Comprehensive technical documentation and regulatory references

Platform Overview

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Transparency in Gaps

If a data point is not officially disclosed, it is marked 'Undisclosed'.

Regulatory Stability

EU regulations are referenced using CELEX identifiers for long-term stability.

Primary Sources

MERCEDES-BENZ Official Site

Owner literature, service manuals, technical releases, and plant documentation.

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.

Regulatory Context

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.

Methodology

Data Compilation

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Last Updated: 25 Feb 2026

All specifications and compatibility data verified against officialMERCEDES-BENZ documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.

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