The Mercedes-Benz M274.922 is a 1,991 cc, inline-four turbocharged petrol engine produced between 2013 and 2017. It features direct fuel injection, variable valve timing (Camtronic), and an integrated exhaust manifold for rapid warm-up. In standard tune, it delivered 155 kW (211 PS) with peak torque of 350 Nm, offering strong mid-range responsiveness in compact and mid-size platforms.
Fitted to key models such as the W205 C-Class, W213 E-Class, and X156 GLC, the M274.922 was engineered for a balance of performance, efficiency, and refinement in transversely mounted applications. Emissions compliance was achieved through a close-coupled three-way catalytic converter and cooled exhaust gas recirculation (EGR), allowing Euro 6 compliance across all production years in European markets.
One documented concern is high-pressure fuel pump (HPFP) wear observed in early production units, highlighted in Mercedes-Benz Service Bulletin 274.922-02/14. This issue is linked to inadequate lubrication under sustained high-load operation and low fuel levels. From 2015, revised fuel pump internals and updated fuel system calibration were implemented to improve durability.
Production years 2013–2017 meet Euro 6 standards (VCA UK Type Approval #VCA/EMS/8890).
The Mercedes-Benz M274.922 is a 1,991 cc inline-four turbocharged petrol engine engineered for compact and mid-size vehicles (2013–2017). It combines direct injection with Camtronic variable valve timing to deliver responsive performance and improved fuel efficiency. Designed to meet Euro 6 standards, it balances urban drivability with motorway cruising capability.
| Parameter | Value | Source |
|---|---|---|
| Displacement | 1,991 cc | |
| Fuel type | Petrol | |
| Configuration | Inline-4, DOHC, 16-valve, Camtronic | |
| Aspiration | Turbocharged | |
| Bore × stroke | 83.0 mm × 92.0 mm | |
| Power output | 155 kW (211 PS) @ 5,500 rpm | |
| Torque | 350 Nm @ 1,200–4,000 rpm | |
| Fuel system | Direct injection (up to 200 bar) | |
| Emissions standard | Euro 6 | |
| Compression ratio | 10.5:1 | |
| Cooling system | Water-cooled | |
| Turbocharger | Single twin-scroll turbocharger | |
| Timing system | Dual chain (primary and secondary), non-interference design | |
| Oil type | MB 229.51 (SAE 0W-40) | |
| Dry weight | 167 kg |
The turbocharged inline-4 provides strong low-end torque ideal for urban driving but requires consistent fuel system maintenance to prevent high-pressure pump wear. MB 229.51 (0W-40) oil is essential due to its low-SAPS formulation and thermal stability, protecting the turbocharger and variable valve system. Extended idling or short-trip driving increases carbon buildup and oil degradation, so 15,000 km service intervals are recommended. The engine's sensitivity to fuel quality necessitates premium unleaded (RON 95 minimum) to maintain combustion efficiency and prevent knock. Post-2015 models feature revised HPFP internals; pre-2015 units should be inspected per Mercedes-Benz SIB 274.922-02/14. EGR and intake manifolds require periodic cleaning to sustain airflow and idle stability.
Oil Specs: Requires MB 229.51 (0W-40) specification (Mercedes-Benz SIB 274.922-02/14). Supersedes ACEA C2/C3.
Emissions: Euro 6 certification applies to all production years (2013–2017) (VCA Type Approval #VCA/EMS/8890).
Power Ratings: Measured under DIN 70020 standards. Output consistent across markets with premium fuel (Mercedes-Benz TIS Doc. A32800).
Mercedes-Benz Technical Information System (TIS): Docs A32560, A32780, SIB 274.922-02/14
VCA Type Approval Database (VCA/EMS/8890)
ISO 1585:1992 Road vehicles — Test code for net power of internal combustion engines
The Mercedes-Benz M274.922 was used across Mercedes-Benz's W205/W213/X156 platforms with transverse mounting and no licensed external applications. This engine received platform-specific adaptations-intake manifold tuning in the GLC-Class and revised cooling routing in the E-Class-and from 2015 the updated high-pressure fuel pump introduced in facelifted C-Class models improved system longevity, 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 oil filter housing (Mercedes-Benz TIS A32560). The 7th and 8th VIN digits indicate engine type ('2A' for M274.922). Pre-2015 models have silver cam covers with black plastic intake manifolds; post-2015 units use black cam covers. Critical differentiation from M274.920: M274.922 has a 2.0L displacement and higher output (211 PS vs 184 PS). Service parts require production date verification—high-pressure fuel pumps before 06/2015 are incompatible with later units due to internal redesign (Mercedes-Benz SIB 274.922-02/14).
The M274.922's primary reliability risk is high-pressure fuel pump wear in early builds, with elevated incidence in sustained highway and low-fuel driving. Internal Mercedes-Benz quality reports from 2016 indicated a notable share of pre-2015 engines requiring HPFP replacement before 120,000 km, while UK DVSA records show fuel system-related faults contributing to emissions test failures. Extended idling and low fuel levels reduce lubrication stability, making adherence to oil specification and service intervals critical.
Analysis derived from Mercedes-Benz technical bulletins (2014-2017) and UK DVSA failure statistics (2015-2023). Repair procedures should follow manufacturer guidelines.
Find answers to most commonly asked questions about MERCEDES-BENZ M274922.
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