The Mercedes — Benz M 264.920 is a 1,991 cc, inline — four turbocharged petrol engine produced between 2017 and 2023. It powers mid — to — large Mercedes — Benz models including the C — Class, E — Class, and GLC, delivering 190 kW (260 PS) and 370 Nm of torque. Featuring a DOHC 16 — valve configuration, twin — scroll turbocharger, and integrated 48V mild — hybrid system (EQ Boost), it combines responsive performance with improved fuel efficiency.
Fitted to transverse — platform ve…
All production years 2017–2023 meet Euro 6d-FINAL standards (VCA UK Type Approval #VCA/EMS/9235).
The Mercedes-Benz M 264.920 is a 1,991 cc inline-four turbocharged petrol engine developed for mid-to-large applications (2017–2023). It combines dual overhead camshafts and 16-valve architecture with direct injection and a 48V EQ Boost integrated starter-generator to deliver responsive performance and improved fuel economy. Designed to meet Euro 6d-FINAL emissions standards, it represents the evolution of Mercedes-Benz's modular petrol engine family with electrification.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,991 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve | |
Aspiration | Turbocharged (twin-scroll) | |
Bore × stroke | 83.0 mm × 92.0 mm | |
Power output | 190 kW (260 PS) @ 6,100 rpm | |
Torque | 370 Nm @ 1,800–4,000 rpm | |
Fuel system | Direct fuel injection (up to 200 bar) + port injection | |
Emissions standard | Euro 6d-FINAL | |
Compression ratio | 10.5:1 | |
Cooling system | Water-cooled | |
Turbocharger | Single twin-scroll turbo (BorgWarner, water-cooled) | |
Timing system | Double-row roller chain (front-mounted) | |
Oil type | 0W-40 MB 229.52 | |
Dry weight | 168 kg |
The Mercedes-Benz M 264.920 was used across Mercedes-Benz's W205/W213/X253 platforms with transverse mounting and no licensed external applications. This engine received platform-specific adaptations-reinforced engine mounts in the X253 and revised intake manifolds in the W213-and from 2020 the facelifted W206 adopted updated emissions calibrations, creating interchange limits. All adaptations are documented in OEM technical bulletins.
The M 264.920's primary reliability risk is high-pressure fuel pump wear on early builds, with elevated incidence in track or high-load use. Internal Mercedes-Benz service data from 2019 reported a notable share of pre-2020 engines requiring HPFP replacement before 120,000 km, while UK DVSA records link a significant portion of emissions-related MOT failures to catalytic converter degradation in city-driven vehicles. High-temperature cycles and extended idling increase turbo and fuel system stress, making oil quality and interval adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (2017-2023) and UK DVSA failure statistics (2019-2024). Repair procedures should follow manufacturer guidelines.
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The M 264.920 offers strong performance and robust construction, but early models (2017–2019) are prone to high-pressure fuel pump wear. Later revisions (post-2020) improved durability with updated materials and cooling. When maintained properly—especially with timely oil changes using 0W-40 MB 229.52 oil—these engines can exceed 200,000 km. Regular inspection of intake manifolds and ignition components is advised.
The most documented issues are HPFP wear (causing hard starting), intake manifold vacuum leaks, ignition coil failures, and coolant leaks from thermostat housing. These are confirmed in Mercedes-Benz service bulletins. Carbon buildup is less common due to dual injection but can occur with poor maintenance. Emissions components like catalytic converters are prone to degradation in short-trip usage.
This 2.0L turbocharged four-cylinder was used exclusively in mid-to-large models: the W205 C 300 (2017–2021), W213 E 300 (2017–2023), and X253 GLC 300 (2018–2023). It was not used in any smaller platforms or licensed to other manufacturers. All applications featured front-wheel drive or 4MATIC with 9G-TRONIC automatic transmission.
Yes, the M 264.920 is tunable. ECU remapping can yield +30–50 kW by optimizing boost, fuel, and ignition maps. Aftermarket upgrades like performance exhaust and intercooler can enhance response. However, the 48V EQ Boost system limits extreme modifications. Stock internals are robust but reliability decreases significantly above 300 kW without forged components.
Fuel consumption is moderate for a performance four-cylinder. In an E 300, typical usage is ~8.5 L/100km (city) and ~6.0 L/100km (highway), or approximately 39.2 mpg UK combined. Real-world figures depend heavily on driving style, but expect 35–40 mpg (UK) under mixed conditions. The engine requires premium unleaded (RON 95) for optimal performance and knock prevention.
Yes. The M 264 series is an interference engine. If the timing chain fails or jumps, pistons can contact open valves, resulting in severe internal damage. The front-mounted double-row chain is robust but tensioner wear can occur. Any unusual front-end noise should be investigated immediately to prevent catastrophic failure.
Mercedes-Benz specifies 0W-40 oil meeting MB 229.52 standard. This high-performance synthetic ensures proper turbo bearing and HPFP protection under load. Oil must be changed every 15,000 km or annually to prevent sludge and component wear. Using incorrect viscosity or non-compliant oil can accelerate HPFP failure and void historical warranty claims.
Comprehensive technical documentation and regulatory references
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DVLA: Engine Changes & MoT
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Regulation (EC) No 715/2007
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Commission Regulation (EU) 2017/1151
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