When buying a used 2023 Mercedes-Benz GLA 180d DCT, the most frequently mentioned issue is: Electrical anomalies: fuse/control unit (failure to start). Additionally, SCR / AdBlue system faults are also commonly reported.
Be cautious
Most reported issue: Electrical anomalies: fuse/control unit (failure to start). Service history and a test drive matter.
Listed from most frequently reported, each with its source.
In some vehicles with the OM654 engine control unit, electrical issues related to fuses (e.g., blown fuse F152) or faults in the control unit requiring intervention have been reported, leading to a no-start condition.
Electrical
The complex exhaust aftertreatment system (SCR + AdBlue dosing + NOx sensors) can develop issues such as out-of-tolerance NOx sensors, AdBlue dosing problems, or selective catalytic component failures.
Exhaust Emissions
In the OM654 2.0 diesel, the DPF can clog, especially with city or short-distance driving. Automatic regenerations may not complete, leading to warning lights, power loss, and the need for forced regeneration.
Exhaust Emissions
The EGR system in the OM654 engine can accumulate carbon deposits that may clog the actuator or passage channels, especially with city driving and short trips. A clogged or faulty EGR valve can cause the check engine light to illuminate, rough running, and performance loss.
Exhaust Emissions
The modern common-rail system and injectors, especially the piezoelectric versions used in the OM654 engine, can be sensitive to fuel quality and may lead to rough running, power loss, or faults requiring intervention.
Fuel System
Same trim, different year
We only publish claims we can verify. Cards come from European fault records and owner reports matched to this vehicle on brand, fuel, engine and generation.