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?
GLA180 / 200 / 250 (M270 turbo) — Maint. Sensitive verdict. The turbocharged M270 petrols (the same family as the A/B-Class) give the GLA punchy, economical performance — a modern turbo direct-injection engine with the usual cautions: timing-chain wear on some early examples, direct-injection intake carbon over time, and turbo/PCV care. Paired with the 7G-DCT dual-clutch, so check the gearbox (shudder/fluid). Well-serviced examples are dependable; buy on documented history and a healthy DCT.
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: Timing chain wear (early), Intake carbon (DI) / 7G-DCT, OM651 injector (early Delphi) / chain, DPF / EGR / injectors (OM607).