CLA180d / 200d / 220d (OM651 / OM607)
2013–2019 · diesel · 2143cc · 177hp
Engine codes: OM651, OM607
Reliability, common problems and owner reviews for the Mercedes Benz CLA C117 CLA180d / 200d / 220d (OM651 / OM607). Check this before you buy used.
The CLA diesels split between the smaller Renault-sourced 1.5 (OM607, the 180d — frugal but modest, K9K-derived) and the Mercedes 2.1 (OM651, 200d/220d — the stronger, better-matched engine). The OM607 carries the Renault diesel's injector/EGR/DPF cautions; the OM651 carries its known early-Delphi-injector risk and rear-timing-chain wear (labour-heavy). Both want clean oil and DPF attention on short trips. A documented, motorway-driven car is dependable; the 220d is the one to have for the body.
Same engine, other cars
This is the same physical engine (OM651) sold under different names across brands. Reliability is broadly shared — cross-check these:
- Mercedes-Benz GLA X156— GLA180d / 200d / 220d (OM651 / OM607)170hp
- Mercedes-Benz Vito / Viano— 2.1 CDI (OM646 / OM651)163hp
- Mercedes-Benz GLK— 220/250 CDI 2.1 (OM651)204hp
- Mercedes-Benz A-Class W176— A180 / A200 / A220 CDI (OM607 / OM651)136hp
- Mercedes-Benz C-Class W204— C200 / C220 CDI 2.1 (OM646, to 2009)170hp
- Mercedes-Benz E-Class W211— E200 / E220 CDI 2.2 (OM646)170hp
- Mercedes-Benz B-Class— 1.8 / 2.1 CDI (OM651)136hp
- Mercedes-Benz C-Class W205— C200d / C220d / C250d (OM651 → OM654)194hp
- Mercedes-Benz M-Class (ML)— ML250 BlueTEC 2.1 CDI (OM651)204hp
- Mercedes-Benz C-Class W204— C200 / C220 / C250 CDI 2.1 (OM651, 2009+)170hp
Known Issues
Early OM651 Delphi injectors can fail; rear-mounted chain can rattle (labour-heavy).
Fix / Workaround: Injector test; chain rattle check; revised parts.
Repair cost: €250–€1600
Typically appears after: 130,000 km
Renault-sourced OM607 has the usual injector/EGR/DPF cautions on short trips.
Fix / Workaround: Motorway regens; injector/EGR service.
Repair cost: €200–€1000
Typically appears after: 130,000 km
Mileage Thresholds
After 150,000 km: Injector + chain/DPF window.
Pre-Purchase Checklist
- ☐220d (OM651) is the pick
- ☐OM607 is the smaller Renault-derived 1.5
- ☐Injector + chain + DPF history
Frequently asked questions
Is the Mercedes Benz CLA C117 CLA180d / 200d / 220d (OM651 / OM607) reliable?
Maint. Sensitive — The CLA diesels split between the smaller Renault-sourced 1.5 (OM607, the 180d — frugal but modest, K9K-derived) and the Mercedes 2.1 (OM651, 200d/220d — the stronger, better-matched engine). The OM607 carries the Renault diesel's injector/EGR/DPF cautions; the OM651 carries its known early-Delphi-injector risk and rear-timing-chain wear (labour-heavy). Both want clean oil and DPF attention on short trips. A documented, motorway-driven car is dependable; the 220d is the one to have for the body.
What are the common problems and reviews for the Mercedes Benz CLA C117 CLA180d / 200d / 220d (OM651 / OM607)?
The most commonly reported problems: OM651 injector (early Delphi) / chain, DPF / EGR / injectors (OM607).
Is a used Mercedes Benz CLA C117 CLA180d / 200d / 220d (OM651 / OM607) worth buying?
Fine if serviced correctly — but it punishes neglect hard. History and the right consumables matter.