GLC X253
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Which Mercedes Benz GLC X253 engine is the most reliable? See common problems, reviews and reliability verdicts across generations and engines.
Frequently asked questions
Which Mercedes Benz GLC X253 engine is the most reliable?
GLC220d / 250d / 300d (OM654 / OM651) — Maint. Sensitive verdict. The GLC diesels span the older 2.1 OM651 (early 250d — carries its known Delphi-injector and rear-chain cautions) and the modern 2.0 OM654 (220d/300d — the much-improved replacement, shared with the C/E-Class and GLB). The OM654 is the one to buy: refined, strong, economical, with no rear-chain-rattle reputation. Standard modern-diesel cautions: DPF on short trips, EGR, AdBlue/SCR, and injector attention at high miles. Paired with 4MATIC and 9G-Tronic. A motorway-driven, serviced car is a dependable long-hauler. Prefer an OM654 220d on oil, DPF and AdBlue history.
Which Mercedes Benz GLC X253 engines should you avoid?
None of the Mercedes Benz GLC X253 engines listed are rated "Problematic" or "Avoid" — but always check the service history before buying.
What are the most common Mercedes Benz GLC X253 problems?
The most commonly reported problems across all Mercedes Benz GLC X253 generations and engines: OM651 injector / chain (early 250d), DPF / EGR / AdBlue, Timing chain (early) / carbon, Turbo / PCV / 48V (M264).