GLA X156
1 generation · Select a generation to see engines
Which Mercedes Benz GLA X156 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Mercedes Benz GLA X156 engine is the most reliable?
1.6 / 2.0 turbo petrol (M270) — 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 GLA X156 engines should you avoid?
None of the Mercedes Benz GLA X156 engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Mercedes Benz GLA X156 problems?
The most commonly reported problems across all Mercedes Benz GLA X156 generations and engines: Piezo injector failure (early cars), Timing chain wear (early), Intake carbon (DI), 7G-DCT clutch (auto), Intake carbon (DI) / 7G-DCT.