GLC200 / 300 (M264 2.0 turbo)
2015–2022 · petrol · 1991cc · 197hp
Engine codes: M264, M274
Reliability, common problems and owner reviews for the Mercedes Benz GLC X253 GLC200 / 300 (M264 2.0 turbo). Check this before you buy used.
The 2.0 turbo petrols (the earlier M274 and the later M264 with 48V mild-hybrid EQ Boost — shared across the C/E-Class) give the GLC strong, refined performance. They're chain-driven direct-injection turbos with the modern cautions: timing-chain attention on some earlier units, direct-injection intake carbon over time, turbo/PCV care, and (M264) the 48V belt-starter/EQ system. Paired with the 9G-Tronic auto (robust) and 4MATIC. A documented car with a healthy chain is dependable and quick. Buy on oil and service history; the M264 mild-hybrid is the smoother, later choice.
Same engine, other cars
This is the same physical engine (M274) sold under different names across brands. Reliability is broadly shared — cross-check these:
Known Issues
Some earlier units want chain attention; DI intake carbon over time.
Fix / Workaround: Check chain on cold start; decarbon if rough.
Repair cost: €300–€1300
Typically appears after: 120,000 km
Turbo and PCV care; M264 48V belt-starter/EQ system.
Fix / Workaround: Clean oil; diagnose EQ/48V as needed.
Repair cost: €150–€1000
Typically appears after: 130,000 km
Mileage Thresholds
After 180,000 km: Chain + ancillary window.
Pre-Purchase Checklist
- ☐M264 mild-hybrid is the later/smoother
- ☐9G-Tronic auto is robust
- ☐Oil + chain history
Frequently asked questions
Is the Mercedes Benz GLC X253 GLC200 / 300 (M264 2.0 turbo) reliable?
Maint. Sensitive — The 2.0 turbo petrols (the earlier M274 and the later M264 with 48V mild-hybrid EQ Boost — shared across the C/E-Class) give the GLC strong, refined performance. They're chain-driven direct-injection turbos with the modern cautions: timing-chain attention on some earlier units, direct-injection intake carbon over time, turbo/PCV care, and (M264) the 48V belt-starter/EQ system. Paired with the 9G-Tronic auto (robust) and 4MATIC. A documented car with a healthy chain is dependable and quick. Buy on oil and service history; the M264 mild-hybrid is the smoother, later choice.
What are the common problems and reviews for the Mercedes Benz GLC X253 GLC200 / 300 (M264 2.0 turbo)?
The most commonly reported problems: Timing chain (early) / carbon, Turbo / PCV / 48V (M264).
Is a used Mercedes Benz GLC X253 GLC200 / 300 (M264 2.0 turbo) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.