The Mercedes — Benz M 260.920 is a 1,991 cc, inline — four turbocharged petrol engine produced between 2017 and 2020. It served as the primary performance engine for the C — Class (W205), E — Class (W213), and GLC (X253) models, delivering responsive power and compact efficiency. Featuring a 16 — valve DOHC configuration, direct fuel injection, and twin — scroll turbocharging, it produced 220 kW (300 PS) and 400 Nm of torque, enabling 0–100 km/h acceleration in under 6 seconds…
All production years (2017–2020) meet Euro 6c standards .
The Mercedes-Benz M 260.920 is a 1,991 cc inline-four turbocharged petrol engine engineered for mid-size executive sedans, coupes, and SUVs (2017–2020). It combines a twin-scroll turbocharger with direct injection and camshaft variable timing to deliver balanced performance and drivability. Designed to meet Euro 6c emissions standards, it balances responsive acceleration with acceptable fuel economy.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,991 cc | |
Fuel type | Petrol (Unleaded, 95 RON min, 98 RON recommended) | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (twin-scroll) | |
Bore × stroke | 83.0 mm × 92.0 mm | |
Power output | 220 kW (300 PS) @ 5,800–6,100 rpm | |
Torque | 400 Nm @ 1,300–4,000 rpm | |
Fuel system | Direct fuel injection (up to 200 bar) | |
Emissions standard | Euro 6c | |
Compression ratio | 10.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single twin-scroll turbo (exhaust manifold-integrated) | |
Timing system | Chain (front-mounted) | |
Oil type | Refer to vehicle handbook / manufacturer specification | |
Dry weight | 162 kg |
The Mercedes-Benz M 260.920 was used across Mercedes-Benz's W205/W213/X253 platforms with longitudinal mounting and reserved for mid-range performance variants. This engine received platform-specific adaptations-higher boost in the W213 E 300 and revised intake in the X253 GLC 300-and from 2020 the next-generation C/E/GLC-Class models adopted the M 254 engine, creating interchange limits. All adaptations are documented in OEM technical bulletins.
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The M 260.920's primary reliability risk is high-pressure fuel pump wear on early builds, with elevated incidence in vehicles used for track or aggressive driving. Internal Mercedes-Benz quality reports from 2020 noted a notable share of pre-2020 engines requiring HPFP replacement before 80,000 km, while VCA records show a small but significant number of emissions-related MOT failures linked to lambda sensor faults from rich-running conditions. Extended high-RPM operation without cooldown and low-RON fuel increase HPFP and turbo stress, making fuel quality and operational discipline critical.
Analysis derived from manufacturer technical service bulletins and industry workshop records. 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 260.920 is a high-performance engine that is robust when properly maintained. Early models (2017–2019) are prone to HPFP wear under aggressive use, but post-2020 revisions resolved this. Regular oil changes with correct viscosity (0W-40 or 5W-40 MB 229.52) and cooldown after high-RPM driving are essential for long-term reliability.
Key issues include high-pressure fuel pump wear (pre-2020), turbo boost control faults, catalytic converter clogging from rich running, and oil leaks from valve and cam covers. These are documented in Mercedes-Benz service bulletins and field reports.
The M 260.920 powers the C 300 (W205 chassis, 2017–2020), E 300 (W213 chassis, 2017–2020), and GLC 300 (X253 chassis, 2017–2020). It is exclusive to mid-range petrol variants of the C/E/GLC-Class. No cross-manufacturer applications are documented.
Yes, extensively. ECU remapping can yield gains of 30–50 kW, and with upgraded turbo, fuel system, and cooling, outputs exceed 300 kW (400 PS) are achievable. The forged internals are robust, but thermal management becomes critical at higher power levels.
Fuel consumption is moderate for a performance engine. In the E 300, expect ~9.5 L/100km (city), ~6.5 L/100km (highway), or ~7.7 L/100km combined (~37 mpg UK). Real-world figures depend heavily on driving style, with aggressive use significantly increasing consumption.
Yes. The M 260.920 is an interference engine. If the timing chain fails or jumps, pistons will contact open valves, resulting in catastrophic engine damage. Proper maintenance of the chain and tensioner is absolutely critical.
Mercedes-Benz specifies 0W-40 or 5W-40 viscosity oil meeting MB 229.52 standard. Change oil every 15,000 km or annually to protect the turbocharger and high-pressure fuel system. Use only high-quality synthetic oils designed for high-performance turbocharged petrol engines.
Comprehensive technical documentation and regulatory references
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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
Type-approval guidance and documentation.
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