KNOWN FAULTS · Mercedes-Benz
Mercedes-Benz Clase A (W177) A 180 d (1.5, OM608) common problems.
2018–2026 · Diesel
Sources are not verified in real time and no entry confirms that your car is affected.
3 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.
Sources from the original database
And Çetin: Mercedes models with Renault enginesKfz-Meisterbetrieb Dietrich: A-Class W176 problemsAraclo: OM608 problems reported by users
View full entryApplies if: Weak points of this model from inspections, breakdown statistics and recalls; anything specific to one engine is stated in the sheet.
Campaigns and weak points of the A-Class W177Known weak points
- Engine / equipment
- Mercedes A-Class W177 (petrol, diesel, plug-in hybrid and AMG)
- Period mentioned
- 2018 onwards
- Symptoms
- On the M282, sometimes higher oil consumption (especially with non-approved oil) and some direct-injection carbon; a front lip that scrapes, a noisy air conditioning and an abrupt lane-change assistant.
- Possible cause described
- Many recalls: eCall sending a wrong position, mis-coded Multibeam headlamps, swarf in the ABS/ESP unit, the rear backrest, brake-fluid loss with the multi-link axle, the brake pedal, airbag mounting, air conditioning with fire risk and too little gearbox oil (possible loss of drive).
- Check for the garage
- Check every campaign by VIN; use Mercedes-approved oil.
- 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.
Sources from the original database
View full entryApplies if: US bulletin (XENTRY LI46.10-P-078012) for Mercedes-Benz cars with a capacitive steering wheel (code 266) built from 2020; in Europe, ask the dealer.
Assist systems not available messages caused by a steering wheel hands-on detection fault (Mercedes-Benz from 2020)Driver assistance
- Engine / equipment
- Mercedes-Benz with a capacitive steering wheel (code 266)
- Period mentioned
- Built from 2020
- Symptoms
- Messages on the cluster: "Active Emergency Stop Assist not available", "Active Lane Keeping Assist not available" or "Active steering assist not available".
- Possible cause described
- The steering wheel hands-on detection fails: the detection mat, its control unit, the contacts or the wiring. Mercedes-Benz releases new software and SCN coding for the HOSWD control unit (note LI46.10-P-078012).
- Check for the garage
- Ask the garage to apply note LI46.10-P-078012: do not replace the HOSWD control unit, update its software and check the steering wheel contacts, wires and ground connections.
- 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.