⚠️ Mercedes-Benz manufacturer position
Mercedes WIS LCV fuel extraction via tank module or lowering. Misuse exclusion.
Vehicle information
| Make | Mercedes-Benz |
|---|---|
| Model | Vito |
| Market status | Sold new in Great Britain — current W447 Vito |
| Body styles | Medium van, Tourer people carrier |
| Generations | W639, W447 (current UK) |
| Engine options | Diesel: 2.0 OM654 diesel — UK Vito with AdBlue Electric: eVito where specified — electric only |
| Fuel tank capacity | Approximately 70 litres |
| Fuel system | OM654 common-rail; AdBlue separate |
| Access method | Varies by body — often underfloor or interior access per WIS |
| Anti-siphon | Yes |
| Service portal | Mercedes-Benz WIS / XENTRY Workshop (authorised dealers) |
Misfuel risk High
Diesel variants use common-rail injection at very high pressure; petrol in diesel destroys pump lubrication and can contaminate the entire fuel circuit within seconds of running.
If the engine was not started
Complete drain and filter change before return to service.
If the engine was started
HP pump/injector checks if engine ran.
Access procedure
- Disconnect the negative battery terminal and relieve fuel system pressure per OEM procedure.
- Access the in-tank fuel pump module via the manufacturer-specified route (access panel or tank lowering).
- Drain contaminated fuel using approved recovery equipment into suitable containers for hazardous waste duty of care.
- Inspect the tank, sender unit, and lines; replace the fuel filter and any contaminated flexible lines as required.
- Reassemble, refill with the correct fuel grade, prime the low-pressure circuit, and check for leaks before start.
- If the engine was run on wrong fuel, follow OEM guidance for high-pressure pump, rail, and injector inspection before restart.
Frequently asked questions
What should I do if I put petrol in my Mercedes-Benz Vito diesel?
Do not start the engine. Arrange OEM-method tank fuel extraction and hazardous waste disposal under UK duty of care. A GBIFDA-certified technician can document the procedure for insurers.
Does Mercedes-Benz warranty cover misfuel on a Vito?
Manufacturer warranties typically exclude wrong fuel as misuse. Expect out-of-pocket or insurance-funded repair.
Can I siphon fuel from a Mercedes-Benz Vito?
UK Mercedes-Benz models usually have anti-siphon filler necks; OEM information specifies pump-module or tank removal instead.
When are injectors replaced after misfuel on a Vito?
If the engine ran on contaminated diesel, injectors and HP pump are inspected or replaced per Mercedes-Benz diagnostics; not always required if caught before start.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
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