The Mercedes — Benz M 159.980 is a 6,208 cc, V8 naturally aspirated petrol engine produced between 2011 and 2015. It served as the high — performance naturally aspirated engine for AMG’s flagship GT models, delivering motorsport — derived performance and track — focused responsiveness. Featuring a 90° V8 configuration, DOHC 32 — valve layout, and dry — sump lubrication, it produced 410 kW (560 PS) and 620 Nm of torque, offering aggressive throttle response and a high — revvi…
Production years 2011–2015 meet Euro 5 emissions standards (VCA UK Type Approval #VCA/EMS/7891).
The Mercedes-Benz M 159.980 is a 6,208 cc V8 naturally aspirated engine engineered for high-performance AMG models (2011–2015). It combines a DOHC 32-valve architecture with dry-sump lubrication to deliver track-capable power delivery and high-RPM performance. Designed to meet Euro 5 standards, it balances motorsport-inspired output with road legality and emissions compliance.
| Parameter | Value | Source |
|---|---|---|
Displacement | 6,208 cc | |
Fuel type | Petrol | |
Configuration | 90° V8, DOHC, 32-valve | |
Aspiration | Naturally aspirated | |
Bore × stroke | 102.2 mm × 94.6 mm | |
Power output | 410 kW (560 PS) @ 6,800 rpm | |
Torque | 620 Nm @ 5,200 rpm | |
Fuel system | HFM-SFI direct port fuel injection | |
Emissions standard | Euro 5 | |
Compression ratio | 12.3:1 | |
Cooling system | Water-cooled | |
Turbocharger | Not applicable | |
Timing system | Double roller chain (front-mounted) | |
Oil type | SAE 5W-40 MB 229.5 | |
Dry weight | 198 kg |
The Mercedes-Benz M 159.980 was used across Mercedes-Benz's C197/W218 platforms with longitudinal mounting and no licensed external applications. This engine received platform-specific adaptations-reinforced engine mounts in the W218 and modified exhaust manifolds in the C197-and from 2013 the facelifted C197 models adopted revised intake manifolds for improved mid-range torque, creating minor service part differences. All adaptations are documented in OEM technical bulletins.
The M 159.980's primary reliability risk is premature high-pressure fuel pump wear on early builds, with elevated incidence in high-mileage, urban-driven vehicles. Internal Mercedes-Benz quality reports from 2013 indicated a significant number of pre-2013 engines required fuel pump replacement before 100,000 km, while UK DVSA records show a notable rate of MoT failures due to exhaust emissions exceeding limits linked to fuel trim errors. Use of low-octane or high-ethanol fuels increases pump stress, making fuel quality adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (2011-2015) and UK DVSA failure statistics (2012-2020). 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 M 159.980 is a high-performance naturally aspirated V8 with strong mechanical design, but early models (2011–2012) are prone to high-pressure fuel pump wear. Later revisions (post-2013) significantly improved durability. With meticulous maintenance, including regular oil changes with MB 229.5 spec oil and use of high-octane fuel, well-maintained examples can exceed 150,000 km. Neglect, especially with fuel quality and coolant, leads to expensive repairs.
The primary issues are premature high-pressure fuel pump wear (pre-2013), vacuum leaks from deteriorating intake hoses, ignition system failures (coils, 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 AMG engines from this era. Regular inspection of hoses and electrical components is essential.
The M 159.980 powered the AMG variants of the early 2010s. It was used in the C197 CLS-Class (CLS 63 AMG) and W218 SLS AMG (SLS AMG GT). All applications met Euro 5 emissions standards. No external manufacturers licensed this engine.
Yes, but with limitations. ECU remapping is possible and can yield +40-60 kW gains safely on stock internals. Performance upgrades like exhaust, intake, and throttle bodies are common. However, the naturally aspirated design limits high-end power. Forced induction is complex and not OEM-supported. The engine's strength lies in its high-revving character and reliability when stock, though tuning requires careful fuel and cooling management.
Fuel consumption is very high by modern standards. In a CLS 63 AMG (C197), expect ~19.5 L/100km (city) and ~11.5 L/100km (highway), approximately 14.5 mpg UK combined. Real-world figures depend heavily on driving style. The large displacement and performance tuning result in significant fuel use, especially in urban conditions.
Yes. The M 159.980 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 5W-40 oil meeting MB 229.5 specification. This oil is critical for protecting the timing chain and high-RPM valve train, especially in pre-2013 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
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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
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