CLA180d / 200d / 220d (OM651 / OM607)

2013–2019 · diesel · 2143cc · 177hp

Engine codes: OM607, OM651

Maint. Sensitive

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.

Known Issues

OM651 injector (early Delphi) / chainrecurring

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

DPF / EGR / injectors (OM607)recurring

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.