KNOWN FAULTS · Mercedes-Benz

Mercedes-Benz CLA (C117) / GLA (X156) 180 d (1.5, OM607) common problems.

2013–2020 · Diesel

Sources are not verified in real time and no entry confirms that your car is affected.

2 known faults with sources

Renault 1.5 diesel (OM607/OM608) injectors, EGR and DPFInjection / EGR / DPF

Engine / equipment: OM607 and OM608 1.5 diesel of Renault origin (K9K): A 160/180 CDI and d, B 160/180, CLA 180 CDI and d, GLA 180 d, Citan
Period mentioned: 2012–2026
Symptoms: Smoke, hesitation or hard starting (injectors); unstable idle, power loss and engine light (EGR); particulate filter warning in town use; oil consumption.
Possible cause described: It is Renault's 1.5 dCi with Mercedes electronics. On the OM607 the injectors are the main weak point; the OM608 that replaced it in 2018 has fewer problems. The EGR builds up carbon, mostly between 60,000 and 100,000 km, and the particulate filter clogs on short trips.
Check for the garage: Identify the engine (OM607 until 2018, OM608 after), measure injector balance rates, check the EGR and particulate filter status and watch the oil level.
Cost cited in the source: Depends on the part (injectors, EGR or turbo); the sources consulted give no reliable figuresA rough figure from the original database, not an up-to-date quote.

Mileage cited in the database: 60,000–100,000 km. This is not a maintenance interval and does not predict a failure.

Applies if: The CLA and GLA of this generation share platform, engines and most campaigns; confirm by VIN.

Camshafts, tensioner, high-pressure lines and campaigns on the CLA and GLA (2013–2019)Known weak points

Engine / equipment: Mercedes CLA C117 and GLA X156 (petrol, diesel and AMG 45)
Period mentioned: 2013–2019
Symptoms: Carboned injectors (M270), faulty camshafts on 2015 petrol cars, oil leaking from the tensioner on 2012–2014 diesels; on the AMG, cracked clutch plates and gearbox faults; heavy wear of brakes, bearings and suspension on the AMGs.
Possible cause described: Recalls: AMG clutch plates, diesel high-pressure lines built October–November 2015 (cracks, fire risk), emissions software, seat-belt anchors, the starter current limiter, airbags, the brake-servo vacuum connector and the A/C refrigerant.
Check for the garage: Check every campaign by VIN; on AMGs, check gearbox, brakes and suspension.
Cost cited in the source: No verified estimate; ask the garage for a quote.A rough figure from the original database, not an up-to-date quote.