KNOWN FAULTS · Mercedes-Benz
Mercedes-Benz Sprinter (VS30) 2.1 CDI (OM651) common problems.
2018–2026 · Diesel
Sources are not verified in real time and no entry confirms that your car is affected.
1 known fault with sources
Chain, injectors and coolant leaksTiming / injection
- Engine / equipment
- OM651 2.1/2.2 CDI (C 200/220/250 CDI, E 200/220/250, GLK, Vito, Sprinter)
- Period mentioned
- 2008 onwards
- Symptoms
- Chain rattle on a cold start; on early units, loud injector knocking; coolant loss from the plastic coolant manifold or the EGR cooler.
- Possible cause described
- Plastic chain guide and a hydraulic tensioner that loses pressure (the chain is at the rear). Early units used problematic piezo injectors that Mercedes replaced in a campaign.
- Check for the garage
- Listen to a cold start, check the dealer's injector campaign history and check the coolant level.
- Cost cited in the source
- Chain: approx. €1,500–3,000 (estimate)A rough figure from the original database, not an up-to-date quote.
Sources from the original database
Euro Premium Parts: OM651 guideAutoscore: OM651 reliabilityForeign Automotive: Mercedes diesel problems
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