When buying a used Mercedes-Benz GLB 180d 2023 (247), the most frequently mentioned issue is carbon buildup in the EGR and intake manifold. Additionally, high oil consumption and leaks from the oil separator are also commonly reported.
Engine varies by trim; verify the engine code on the listing.
Listed from most frequently reported, each with its source.
In modern diesel engines (including OM654), the EGR system and intake manifolds can accumulate significant carbon deposits, reducing their effectiveness. This leads to rough running, worsening fuel consumption, and loss of engine response.
Engine Internal
Some technical reports for the OM654 indicate higher than expected oil consumption or oil traces in turbocharger pipes due to leaks in the oil separator/crankcase ventilation. This leads to oily residues in the intercooler and intake ducts, reducing performance.
Engine Internal
In some vehicles equipped with SCR (AdBlue), warnings related to NOx sensors, crystallization in the AdBlue injector, or pump/dosing unit failures have been reported; this can lead to error messages and power limitation.
Exhaust Emissions
The DPF can clog, especially during short city trips that prevent complete regenerations.
Exhaust Emissions
Owners report issues such as actuator problems, play in rotating parts, or oil leaks into the intake circuit; this results in loss of boost pressure, smoke from the intake, or poor performance.
Turbo
Same trim, different year
We only publish claims we can verify. Cards come from Difetti fault records matched to this vehicle on brand, fuel, engine and generation.