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.…
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 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.
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.
The most common questions about engine codes, what they mean, how to find them and how this database works
The M274.922 offers responsive performance and good efficiency, but early models (2013–2014) are prone to high-pressure fuel pump issues if maintenance is deferred. Post-2015 revisions resolved most lubrication concerns, so well-maintained examples exceed 180,000 km. Using correct MB 229.51 oil and adhering to 15,000 km service intervals is essential for longevity.
Primary issues include high-pressure fuel pump wear (especially pre-2015), intake carbon buildup, cam cover oil leaks, and ignition coil misfires. These are documented in Mercedes-Benz service bulletins. Turbocharger and EGR faults are less common but may occur with poor maintenance.
This 2.0L turbo petrol was used in several core models: C-Class (W205 C250/C300), E-Class (W213 E300), GLC-Class (X156 GLC300), and CLA-Class (C117 CLA250/CLA300). All applications are petrol-powered and Euro 6 compliant. No cross-manufacturer usage is documented.
Yes, the M274.922 responds well to ECU remapping, safely yielding +30–50 kW by optimizing boost, ignition, and fuel maps. Supporting mods like high-flow intake and exhaust improve responsiveness. However, the stock turbo and fuel system limit extreme tuning, and modifications should not compromise emissions or reliability.
Efficient for a turbo petrol. In a C300 (W205), combined consumption is ~7.5 L/100km (~37.7 mpg UK). City driving may reach 9.5 L/100km, while highway runs can achieve ~6.0 L/100km (~47 mpg UK). Real-world economy depends heavily on driving style, but expect 35–45 mpg (UK) under mixed conditions.
No. The M274.922 uses a non-interference valvetrain design. If the timing chain fails, piston-to-valve contact is avoided, preventing catastrophic internal damage. However, timing chain replacement is still recommended at 180,000 km or as per service schedule to maintain synchronization.
Mercedes-Benz specifies SAE 0W-40 oil meeting MB 229.51 standard. This low-SAPS synthetic oil provides optimal protection for the turbocharger and direct injection system. Change intervals should not exceed 15,000 km or one year to prevent sludge and wear.
Comprehensive technical documentation and regulatory references
Independent Technical Reference
EngineCode.uk is an independent technical reference platform operated by Engine Finders UK Ltd. We are not affiliated with MERCEDES-BENZ or any other manufacturer. All content is compiled from official sources for educational, research, and identification purposes.
Strict Sourcing Protocol
Only official OEM publications and government portals are cited.
No Unverified Sources
No Wikipedia, forums, blogs, or third-party aggregators are used.
Transparency in Gaps
If a data point is not officially disclosed, it is marked 'Undisclosed'.
Regulatory Stability
EU regulations are referenced using CELEX identifiers for long-term stability.
MERCEDES-BENZ Official Site
Owner literature, service manuals, technical releases, and plant documentation.
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.
Data Compilation
All data is compiled from OEM and government publications, reviewed by our editorial team, and updated regularly.
Corrections & Submissions
To request a correction or submit documentation, email: corrections@enginecode.uk
Fair Dealing Use
All engine and vehicle images are used under UK 'fair dealing' principles for technical identification and educational use. Rights remain with their respective owners.
Copyright Concerns
For copyright concerns, email: copyrights@enginecode.uk
GDPR Compliance
EngineCode.uk complies with UK GDPR. We do not collect personal data unless explicitly provided.
Data Requests
For access, correction, or deletion requests, email: gdpr@enginecode.uk
Trademark Notice
All trademarks, logos, and engine codes are the property of their respective owners. Use on this site is strictly for reference and identification.
No Paid Endorsements
This website contains no paid endorsements, affiliate links, or commercial partnerships. We do not sell parts or services.
Funding Model
Our mission is to provide accurate, verifiable, and neutral technical data for owners, restorers, and technicians. This site is self-funded.
All specifications and compatibility data verified against officialMERCEDES-BENZ documentation and EU/UK regulatory texts. Where official data is unavailable, entries are marked “Undisclosed”.
All external links open in new tabs. Please verify current availability of resources.