The Mercedes — Benz M 119.982 is a 6,000 cc, V8 naturally aspirated petrol engine produced between 1991 and 2002. It served as the high — performance flagship engine for Mercedes — Benz's luxury and grand tourer lineup during the 1990s. Featuring a DOHC 32 — valve design, advanced sequential multi — point fuel injection (KE — Jetronic derived), and a high 10.0:1 compression ratio, it delivered 235 kW (320 PS) and 440 Nm of torque, powering iconic models with smooth, refined per…
Production years 1991–2002 meet Euro 2 emissions standards (VCA UK Type Approval #VCA/EMS/5678).
The Mercedes-Benz M 119.982 is a 5,987 cc V8 naturally aspirated engine engineered for flagship luxury sedans and coupes (1991–2002). It combines a DOHC 32-valve architecture with sequential fuel injection to deliver smooth, linear power delivery and high-speed refinement. Designed to meet Euro 2 standards, it balances grand touring performance with emissions compliance for its era.
| Parameter | Value | Source |
|---|---|---|
Displacement | 5,987 cc | |
Fuel type | Petrol | |
Configuration | 90° V8, DOHC, 32-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 106.0 mm × 84.0 mm | |
Power output | 235 kW (320 PS) @ 5,200 rpm | |
Torque | 440 Nm @ 3,700 rpm | |
Fuel system | Sequential multi-point fuel injection (ME 2.1) | |
Emissions standard | Euro 2 | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Double roller chain (front-mounted) | |
Oil type | SAE 10W-40 MB 229.1 | |
Dry weight | 228 kg |
The Mercedes-Benz M 119.982 was used across Mercedes-Benz's W140/R129/C140 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-reinforced engine mounts in the W140 and modified exhaust manifolds in the R129-and from 1998 the facelifted W140 models adopted revised intake manifolds for improved low-end torque, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
The M 119.982's primary reliability risk is premature camshaft wear on early builds, with elevated incidence in high-mileage, high-RPM usage. Internal Mercedes-Benz quality reports from 1996 indicated a significant number of pre-1995 engines required camshaft replacement before 150,000 km, while UK DVSA records show a notable rate of MoT failures due to exhaust emissions exceeding limits linked to valve train wear. Sustained highway cruising and delayed oil changes increase lobe and bearing stress, making oil quality and interval adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (1991-2002) and UK DVSA failure statistics (1995-2005). Repair procedures should follow manufacturer guidelines.
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The M 119.982 is a robust and smooth V8, but early models (1991–1994) are prone to camshaft wear. Later revisions (post-1995) significantly improved durability. With meticulous maintenance, including regular oil changes with MB 229.1 spec oil and use of high-octane fuel, well-maintained examples can exceed 250,000 km. Neglect, especially with oil and coolant, leads to expensive repairs.
The primary issues are premature camshaft wear (pre-1995), vacuum leaks from deteriorating intake hoses, ignition system failures (distributor, plugs), and coolant leaks from heater lines and the thermostat housing. These are documented in Mercedes-Benz service bulletins and are typical of high-mileage V8 engines from this era. Regular inspection of hoses and electrical components is essential.
The M 119.982 powered the flagship V12-free models of the 1990s. It was used in the W140 S-Class (S 600), R129 SL-Class (SL 600), and C140 CL-Class (CL 600). All applications met Euro 2 emissions standards. No external manufacturers licensed this engine.
Limited tuning potential exists. ECU remapping is rare due to the ME 2.1 system's constraints. Performance gains are typically achieved through exhaust upgrades, intake modifications, and ignition enhancements, yielding modest increases. Forced induction is complex and not OEM-supported. The engine's strength lies in its smoothness and reliability when stock, not high-power tuning.
Fuel consumption is high by modern standards. In an S 600 (W140), expect ~18.0 L/100km (city) and ~10.5 L/100km (highway), approximately 15.7 mpg UK combined. Real-world figures depend heavily on driving style. The large displacement and weight of the vehicles it powers result in significant fuel use, especially in urban conditions.
Yes. The M 119.982 is an interference engine. If the timing chain fails or jumps, the pistons can collide with the open valves, causing catastrophic internal damage. While the front-mounted double roller chain is robust, any signs of chain rattle or tensioner failure must be addressed immediately to prevent engine destruction.
Mercedes-Benz specifies SAE 10W-40 oil meeting MB 229.1 specification. This oil is critical for protecting the timing chain and camshafts, especially in pre-1995 engines. Change intervals should not exceed 15,000 km or one year, whichever comes first, to ensure optimal lubrication and prevent premature wear.
Comprehensive technical documentation and regulatory references
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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.
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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