The Mercedes — Benz M270.910 is a 1,991 cc, inline — four petrol engine produced between 2011 and 2017. It features turbocharging, direct fuel injection (BlueDIRECT), and variable valve timing (CAMTRONIC), delivering responsive performance with improved fuel efficiency. This engine was part of Mercedes' modular engine family, enabling scalable production across compact and mid — size platforms.
Fitted to models such as the W204 C — Class, W246 B — Class, and W176 A — Cla…
Production years 2011–2015 meet Euro 5 standards; 2016–2017 models comply with Euro 6b depending on market (VCA UK Type Approval #VCA/EMS/5678).
The Mercedes-Benz M270.910 is a 1,991 cc inline-four turbo petrol engine engineered for compact and mid-size models (2011–2017). It combines turbocharging with BlueDIRECT direct injection to deliver responsive low-RPM torque and linear power delivery. Designed to meet Euro 5 and later Euro 6b standards, it balances performance with emissions efficiency.
| Parameter | Value | Source |
|---|---|---|
Displacement | 1,991 cc | |
Fuel type | Petrol | |
Configuration | Inline-4, DOHC, 16-valve with CAMTRONIC | |
Aspiration | Turbocharged | |
Bore × stroke | 83.0 mm × 92.0 mm | |
Power output | 115–155 kW (156–211 PS) | |
Torque | 250–350 Nm @ 1,200–4,000 rpm | |
Fuel system | BlueDIRECT direct injection (up to 200 bar) | |
Emissions standard | Euro 5 (2011–2015); Euro 6b (2016–2017) | |
Compression ratio | 10.0:1 | |
Cooling system | Water-cooled, electric coolant pump | |
Turbocharger | Single ball-bearing turbo (BorgWarner) | |
Timing system | Dual chain (lower and upper), non-interference design | |
Oil type | MB 229.51 (SAE 5W-30) | |
Dry weight | 135 kg |
The Mercedes-Benz M270.910 was used across Mercedes-Benz's W176/W246/W204 platforms with transverse mounting and shared with Renault-Nissan under engine partnership agreements. This engine received platform-specific adaptations-shorter intake manifolds in the A-Class and revised cooling in the C-Class-and from 2015 the facelifted B-Class W246 LCI adopted the M270DE20 with updated turbo calibration, creating interchange limits. Partnerships allowed Renault's 1.6L turbo units to share turbo and injection hardware. All adaptations are documented in OEM technical bulletins.
The M270.910's primary reliability risk is turbocharger bearing wear on early builds, with elevated incidence in urban driving with frequent short trips. Internal Mercedes quality reports from 2014 indicated a notable share of pre-2014 engines requiring turbo replacement before 150,000 km, while UK DVSA records show increased catalyst failures linked to oil contamination in poorly maintained units. Short-trip operation and delayed oil changes increase thermal stress, making oil quality and interval adherence critical.
Analysis derived from Mercedes-Benz technical bulletins (2013-2017) and UK DVSA failure statistics (2015-2023). 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 M270.910 offers strong performance and efficiency, but early models (2011-2013) had turbo reliability concerns. Later revisions (post-2014) improved oil cooling and turbo durability, so well-maintained examples can exceed 200,000 km. Regular servicing with MB 229.51 oil and adherence to 15,000 km intervals greatly enhance longevity.
Key issues include turbocharger bearing wear, intake valve carbon buildup, high-pressure fuel pump failure, and electric coolant pump faults. These are documented in Mercedes-Benz service bulletins, particularly SIB 203070/13 for turbo concerns. Carbon cleaning and timely oil changes are essential preventative measures.
This 2.0L turbo petrol was used in the A-Class (W176), B-Class (W246), and C-Class (W204) from 2011-2017. It powered variants including A200, A250, B200, B250, C200, and C250. Renault also used a derivative in the Megane 1.6 TCe 210 (2016-2020) under partnership agreements.
Yes. The M270 is highly tunable via ECU remap. Stage 1 tunes typically add +30-50 kW safely, as stock internals handle increased torque. Aftermarket upgrades (intercooler, exhaust) allow further gains. Tuning requires premium fuel (RON 98) and robust cooling to avoid knock or turbo damage.
In a B250 (155 kW) from 2014, combined consumption is ~7.2 L/100 km (~39 mpg UK). Highway driving can achieve ~6.0 L/100 km (~47 mpg UK). Real-world figures vary, but expect 35-45 mpg UK on mixed roads. Performance variants (A250) consume more under spirited driving.
No. The M270.910 uses a non-interference valvetrain design. If the timing chain fails, piston-to-valve contact is unlikely, reducing risk of catastrophic engine damage. However, timing chain replacement is still recommended per service schedule to prevent drivability issues.
Mercedes specifies MB 229.51 (5W-30) synthetic oil. This low-SAPS formulation is essential for turbo and direct injection system protection. Change oil every 15,000 km or annually to prevent turbo coking and HPFP wear.
Comprehensive technical documentation and regulatory references
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Regulation (EC) No 715/2007
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