Mercedes-Benz CLA C118 Engines — The Complete UK Guide
Every engine fitted to the CLA C118 coupé — from the 1.3-litre turbo to the 2.0-litre AMG monsters. Real UK costs, honest reliability data, and the M139 that redefined the hot-hatch engine. Backed by real UK enquiries in 2025 [PATTERN DATA].
Explore C118 Engines
Mercedes-Benz CLA C118 Engine Codes — The Complete Database
Every engine fitted to the CLA C118 coupé specifically — petrol, diesel, mild-hybrid and plug-in hybrid across the 2019–2025 production run.
Overview
Mercedes-Benz CLA C118 — Overview
The Mercedes-Benz CLA C118 is the second-generation CLA four-door coupé, launched in 2019 as the successor to the C117.
Built on the MFA2 platform shared with the W177 A-Class and W247 B-Class, the C118 brought a longer wheelbase, wider track and a completely new interior architecture. Engine choice spans the Renault-sourced M282 1.3-litre turbo petrol (shared with the A-Class and Renault Mégane), the Mercedes-developed M260 2.0-litre turbo petrol, the M139 2.0-litre turbo (the most powerful series-production four-cylinder in the world at launch), and the OM608/OM654 diesel range. A plug-in hybrid (CLA 250 e) joined the range in 2020.
Key Facts
Platform
Mercedes-Benz MFA2 (C118 coupé variant)
Predecessor
C117 CLA
Successor
— (current generation)
Sibling body styles in this generation
X118 Shooting Brake
Market Intelligence
The C118 coupé attracts strong specialist interest in the UK used market, with M282 petrol and OM654 diesel enquiries dominating pre-purchase inspections [PATTERN DATA].
Best & Worst Engines
Thin-Data Summary
“Thin-Data Fallback mode applied — compressed to a single paragraph. Best & Worst Engines: The C118's engine range splits into three distinct reliability tiers. At the top sits the M260 2.0-litre turbo (CLA 250, CLA 35 AMG) — a Mercedes-developed unit with strong durability and fewer reported issues than its smaller sibling. The OM654 2.0-litre diesel (CLA 200 d/220 d) is the pick of the diesel range — a modern, efficient unit with good real-world economy and proven longevity in the wider Mercedes lineup. The M282 1.3-litre turbo (CLA 180/200) sits in the middle — a Renault-sourced engine that's generally reliable but has documented timing chain and injector sensitivity, particularly on higher-mileage examples. The M139 (CLA 45/45 S) is exceptional — the most powerful four-cylinder production engine ever, but its complexity and extreme tune make it the most expensive to maintain outside warranty. The OM608 1.5-litre diesel (CLA 180 d) is the least recommended — a Renault K9K-based unit with injector and DPF sensitivity that doesn't justify its economy advantage over the OM654. For most buyers, the M260 petrol or OM654 diesel represent the sweet spot between performance, economy and running costs. Who it's for: buyers who want the sweet spot between performance and running costs.”
Who it's for:
Mercedes-Benz CLA C118 — Ownership Economics
The C118 rule
A £3,500–£6,000 M260 recon against a £12,000–£20,000 C118 sits at 18–50% of the car's value — well within Mercedes-Benz's 70% threshold. Even a £6,000–£10,000 M139 recon on a £25,000+ CLA 45 sits at 24–40% — safe. The C118's relatively strong retained values mean engine replacement is almost always financially viable, with the exception of very high-mileage CLA 180 d examples where the OM608 recon may approach the car's value.
Key Takeaways
Which C118 Costs Least To Own?
OM654 diesel — strong fuel economy, proven durability.
Which C118 Costs Most To Own?
M139 (CLA 45/45 S) — extreme tune, extreme running costs.
Which C118 Is Best Value?
CLA 250 (M260) — the sweet spot between performance and running costs.
Common Problems
C118 Engine Replacement Costs — By Engine and Condition
Core Variants
Core Variants
Market Intelligence
Most Requested E90 Engines (2025)
Most Requested E90 Variants
Average E90 Replacement Cost
Most Common E90 Failures
FAQ
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UK Engine Replacement Services for C118
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Find the best Mercedes-Benz CLA C118 engine replacement UK drivers rely on. Compare real prices from trusted specialists on EnginesMarket today and get back on the road with confidence.
