The Mercedes — Benz M116.980 is a 4,244 cc, V8 naturally aspirated petrol engine produced between 1998 and 2002. It features a 90 — degree V8 configuration, dual overhead camshafts (DOHC), and 32 — valve design with sequential multi — port fuel injection. In standard tuning, it produces 205 kW (279 PS) at 5,500 rpm and 410 Nm of torque at 3,500–4,000 rpm, delivering smooth, linear power ideal for grand touring applications.
Fitted to flagship models including the W220 S Class…
All production years (1998–2002) meet Euro 3 emissions standards (VCA UK Type Approval #VCA/EMS/3456).
The Mercedes-Benz M116.980 is a 4,244 cc V8 naturally aspirated engine designed for luxury and performance sedans (1998–2002). It combines DOHC architecture with sequential fuel injection to deliver smooth power delivery and strong mid-range torque. Designed to meet Euro 3 standards, it balances refinement with regulated emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 4,244 cc | |
Fuel type | Petrol | |
Configuration | 90° V8, DOHC, 32-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 92.0 mm × 79.0 mm | |
Power output | 205 kW (279 PS) @ 5,500 rpm | |
Torque | 410 Nm @ 3,500–4,000 rpm | |
Fuel system | Sequential multi-port fuel injection (ME 2.1 ECU) | |
Emissions standard | Euro 3 | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Double-row roller chain (front-mounted) | |
Oil type | MB 229.3 (SAE 10W-60) | |
Dry weight | 198 kg |
The Mercedes-Benz M116.980 was used across Mercedes-Benz's W210/W220 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-reinforced engine mounts in the S-Class and revised intake manifolds in the E-Class-and from 2002 the facelifted W211 E-Class adopted the M112 V6 as standard, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The M116.980's primary reliability risk is intake manifold gasket degradation in pre-2000 units, with elevated incidence in high-mileage or poorly maintained vehicles. Internal Mercedes-Benz quality reports from 2003 indicated a notable share of pre-2000 engines showing vacuum leaks before 180,000 km, while UK DVSA data links a portion of emissions-related failures to aging catalytic converters. Extended oil intervals and use of non-compliant oil increase lifter and cam wear risk, making oil quality and adherence to service schedules critical.
Analysis derived from Mercedes-Benz technical bulletins (1998-2002) and UK DVSA failure statistics (2004-2014). Repair procedures should follow manufacturer guidelines.
The most common questions about engine codes, what they mean, how to find them and how this database works
The M116.980 is a durable V8 with smooth power delivery, but pre-2000 units are prone to intake manifold gasket leaks if service intervals are delayed. Later models (2000+) have revised gasket materials that improve longevity. With strict use of MB 229.3 oil and 15,000 km service intervals, well-maintained engines can exceed 250,000 km reliably.
Key issues include intake manifold gasket failure (especially pre-2000), hydraulic lifter noise, coolant leaks from the thermostat housing, and ignition coil degradation. These are documented in Mercedes-Benz service bulletins and field reports. Regular inspection and use of OEM parts mitigate most risks.
The M116.980 powered several flagship models: S 430 (W220), E 430 (W210), and CL 430 (C215). It was used from 1998 to 2002, meeting Euro 3 standards throughout. It was succeeded by the M113 V8 in the W221 S-Class, marking a displacement increase to 5.0L.
Yes, though gains are limited due to its naturally aspirated design. ECU remapping can yield +15–25 kW by optimizing throttle response and fuel curves. Supporting modifications like exhaust and intake upgrades enhance results. However, tuning must not compromise oil pressure or thermal management, especially on pre-2000 engines.
Real-world consumption is approximately 12–15 L/100km (19–24 mpg UK) in mixed driving. Highway efficiency improves to ~10 L/100km (28 mpg UK), while city driving can exceed 17 L/100km (17 mpg UK). Fuel quality and driving style significantly impact economy due to the engine's refinement tuning.
Yes. The M116.980 is an interference engine, meaning that if the timing chain fails, pistons will contact open valves, causing severe internal damage. The front-mounted double-row chain is robust but requires proper tension and lubrication. Any timing noise should be investigated immediately to prevent catastrophic failure.
Mercedes-Benz specifies SAE 10W-60 oil meeting MB 229.3 standard. This high-temperature-stability oil is critical for protecting hydraulic lifters and maintaining oil pressure. Oil must be changed every 15,000 km or annually to prevent lifter noise and gasket degradation, especially in pre-2000 engines.
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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