KNOWN FAULTS · Mercedes-Benz

Mercedes-Benz Clase B (W247) B 180 d / 200 d (OM608/OM654) common problems.

2018–2026 · 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: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.

Vibrations, driver aids and campaigns on the B-Class W247Known weak points

Engine / equipment: Mercedes B-Class W247 (petrol, diesel and plug-in hybrid)
Period mentioned: 2018 onwards
Symptoms: A dashboard that vibrates at high revs (often from the cabin filter), boot rattles, failing automatic high beam and traffic-sign recognition; at the roadworthiness test, springs, shock absorbers, track-rod ends and handbrake.
Possible cause described: Recalls: towbar locking bolt (4/2/2018–9/12/2019), high-beam assist (19/7/2018–4/2/2019), driver airbag (2018–2019), turbo oil feed line (2019–2020), low oil in the dual-clutch gearbox (31/1/2018–6/3/2020), eCall (up to 16/8/2024) and the pyro fuse (18/6–18/7/2024).
Check for the garage: Check every campaign by VIN; check suspension and handbrake before the roadworthiness test.
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.