GLB X247
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Which Mercedes Benz GLB X247 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Mercedes Benz GLB X247 engine is the most reliable?
GLB200d / 220d (OM654 2.0) — Maint. Sensitive verdict. The GLB diesels use the modern 2.0 OM654 (the engine that replaced the OM651, shared across the C/E-Class and GLC) — a refined, strong and genuinely economical unit and the engine to buy in the GLB. It's a much-improved design over the OM651 (no rear-chain-rattle reputation, stepped-bowl combustion, integrated exhaust treatment), with the standard modern-diesel cautions: DPF on short trips, EGR, AdBlue/SCR, and injector attention at high miles. Paired with 4MATIC and the 8G/7G-DCT. A motorway-driven, serviced car is a dependable long-hauler — the 220d is the pick. Buy on oil, DPF and AdBlue history.
Which Mercedes Benz GLB X247 engines should you avoid?
None of the Mercedes Benz GLB X247 engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Mercedes Benz GLB X247 problems?
The most commonly reported problems across all Mercedes Benz GLB X247 generations and engines: DPF / EGR / AdBlue, Injector / DCT (high miles), Intake carbon / turbo / PCV, 7G-DCT / bore coating.