Mercedes-Benz GLC2021

• **Diesel engine needs careful inspection.** OM654 engines prone to injector fouling and carbon build-up; ask for service history confirming regular motorway use and professional fuel system cleans.
• **DPF problems common on this generation,** especially urban-driven examples. Check if regeneration cycles are documented; low-mileage cars (under 80k km) face higher clogging risk—avoid if only city-driven.
• **Strong market demand and steady prices.** Median at €38,950 with year-on-year growth; well-positioned value if mechanically sound, though high active stock means leverage exists in negotiation.
• **Test transmission carefully at low speed.** Some OM654 models show judder during cold starts and slow manoeuvres; request extended test drive in cool conditions before committing.
• **Verify NCT status and upcoming costs.** At 5 years old, annual NCT required; diesel particulate filter condition will directly impact test pass and future repair bills.

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