CLA C117
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Which Mercedes Benz CLA C117 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Mercedes Benz CLA C117 engine is the most reliable?
CLA180 / 200 / 250 (M270 turbo) — Maint. Sensitive verdict. The turbo petrols (M270, the same family as the A/B-Class and GLA) give the CLA punchy, economical performance — a modern turbo direct-injection engine with the usual cautions: timing-chain wear on some earlier examples (cold-start rattle check), direct-injection intake carbon over time, and turbo/PCV care. Paired with the 7G-DCT dual-clutch, so check the gearbox for shudder and confirm fluid service. Well-serviced examples are dependable; buy on documented history and a healthy DCT — the CLA250 is the strong pick.
Which Mercedes Benz CLA C117 engines should you avoid?
None of the Mercedes Benz CLA C117 engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Mercedes Benz CLA C117 problems?
The most commonly reported problems across all Mercedes Benz CLA C117 generations and engines: Timing chain wear (early), Intake carbon (DI) / 7G-DCT, OM651 injector (early Delphi) / chain, DPF / EGR / injectors (OM607).