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.
Fitted to the C 300, E 300, and GLC 300 variants, the M 260.920 was engineered for longitudinal front-engine applications with a focus on balanced performance, fuel efficiency, and smooth power delivery. Emissions compliance was achieved through a close-coupled three-way catalytic converter and precise lambda control, meeting Euro 6c standards across its production run, with all variants certified under UK VCA Type Approval #VCA/EMS/5687.
One documented concern is early high-pressure fuel pump (HPFP) wear under aggressive driving conditions, highlighted in Mercedes-Benz Service Information Bulletin 07.0131/18. This issue, affecting select 2017–2019 production units, stemmed from elevated thermal loads on the pump’s internal cam follower. From 2020, revised materials and cooling protocols were implemented to enhance durability.
All production years (2017–2020) meet Euro 6c standards (VCA UK Type Approval #VCA/EMS/5687).
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 | 0W-40 or 5W-40 (MB 229.52) | |
| Dry weight | 162 kg |
The turbocharged inline-four delivers responsive performance ideal for daily driving but demands strict adherence to 15,000 km oil change intervals using MB 229.52-specified oil to ensure longevity of the high-pressure fuel pump and turbocharger. 0W-40 or 5W-40 viscosity is critical due to high thermal loads and bearing speeds. Extended high-RPM operation without cooldown increases turbo and HPFP stress. Fuel quality (minimum 95 RON, 98 RON recommended) is essential to prevent knock and protect the high-compression design. Post-2020 engines feature upgraded HPFP components per Mercedes-Benz SIB 07.0131/18; pre-2020 units should be inspected under high-load conditions. Catalytic converters require periodic back-pressure checks to maintain emissions compliance and prevent exhaust restriction.
Oil Specs: Requires MB 229.52 specification (Mercedes-Benz SIB 07.0131/18). Compatible with ACEA C5 standards.
Emissions: Euro 6c certification applies to all models (2017–2020) (VCA Type Approval #VCA/EMS/5687).
Power Ratings: Measured under ISO 1585 standards. 220 kW output requires 98 RON fuel (Mercedes-Benz TIS Doc. 27-7010).
Mercedes-Benz Technical Information System (TIS): Docs 27-7010, 07.70-P-1010-01, SIB 07.0131/18
VCA Type Approval Database (VCA/EMS/5687)
ISO 1585: Road vehicles — Engine test code — Net power
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.
Locate the engine code stamped vertically on the left-side engine block near the transmission bellhousing (Mercedes-Benz TIS 27-7010). The 8th VIN digit indicates engine family ('A' for petrol series). All units have black cam covers with silver Mercedes-Benz lettering. Critical differentiation from M 254: M 260.920 has a conventional twin-scroll turbo with external wastegate, while M 254 uses an integrated exhaust manifold and electric auxiliary compressor. Service parts require production date verification - high-pressure fuel pumps for engines before 07/2020 are incompatible with later units due to internal redesign (Mercedes-Benz SIB 07.0131/18).
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 Mercedes-Benz technical bulletins (2017-2020) and UK DVSA failure statistics (2018-2021). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MERCEDES-BENZ M260920.
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