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2020 Mercedes-Benz Sprinter 4500
Reliability tier: verified - see /disclosure/
Engine: OM642 3.0L V6 BlueTEC (Mercedes-Benz OM642, 3.0L)
72-degree V6 turbodiesel, 188 hp / 325 lb-ft in this era, 7-speed automatic. VS30 generation (W907, built in Charleston SC since 2018): 188 hp / 325 lb-ft V6 diesel paired with the 7-speed automatic. Freightliner badging ended after MY2021.
Applicable failure modes (7)
- BlueTEC DEF/SCR: sensors, DEF quality, countdown derate (2010+)
- EGR valve and intake coking
- Fuel system: hard start / long crank and injector complaints
- Glow plug module and cold-start roughness
- Intake port shutoff (swirl) flap motor and stuck flaps
- Oil cooler stack seal leak (the signature OM642 repair)
- Turbo boost control: VNT actuator, leaks, limp episodes
Applicable parts (1)
Platform recipes (3)
- BlueTEC DEF/SCR derate (2010+): the countdown is a diagnosis chain, not a parts verdict - DEF quality and level sensing first, then the supply pump, tank hardware last (the big bill)
- Diagnosis-driven EGR/intake service: clean before you replace
- The signature OM642 repair: the oil-to-coolant stack sits deep in the V of the banks, so the intake and ancillaries come off for access