⚠️ Mercedes-Benz overview
Mercedes-Benz is the core brand of Mercedes-Benz Group in Great Britain, spanning A-Class through S-Class, EQ electric models, and Sprinter/Vito vans. Diesel OM654/OM656 common-rail engines are highly sensitive to petrol misfuel.
Service portal
Mercedes-Benz WIS / XENTRY Workshop
Fuel system notes
- Many UK passenger cars have under-seat fuel pump modules.
- Commercial Sprinter often requires tank lowering.
- EQ models have no fuel tank — separate EV safety procedures.
Model index
Select a model for misfuel and fuel contamination procedures:
Frequently asked questions
What is Mercedes WIS?
Workshop Information System — authorised dealers use WIS/XENTRY for tank access and flush procedures.
Does Mercedes cover misfuel?
No — improper fuel is excluded as customer-caused damage.
Need professional misfuel recovery?
Find a certified operator or read consumer guidance for your next steps.
Find an operator Consumer guidance