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What 9 owners told NHTSA about the 2018 Mercedes-benz Sprinter 3500xd Crew Van

These are the actual owner complaints behind this car’s reliability verdict, filed with the federal government, unedited. They’re unverified reports, not confirmed defects: read them as leads for your pre-purchase inspection, not a diagnosis.

All (9)Brakes (3)Speed control (2)Body & structure (1)Electrical system (1)Electronic Stability Control (esc) (1)Engine (1)Fuel System, Diesel (1)Lights (1)Stability control (1)Steering (1)

1 of 9 complaints match · Fuel System, Diesel · clear filters

Feb 12, 2025Fuel System, Diesel

The contact owns a 2018 Mercedes Benz Sprinter 3500. The contact stated that while starting the vehicle, the contact noticed that the Diesel Exhaust Fluid (DEF) warning light was illuminated. The vehicle was taken to the dealer where it was diagnosed and determined that the Diesel Exhaust Fluid (DEF) tank had failed and needed to be replaced. The vehicle was not repaired. The manufacturer was made aware of the failure and referred the contact to the NHSTA Hotline for assistance. The approximate failure mileage was 15,000.

NHTSA ODI 11642281

Working with the data? Download all 9 complaints as CSV · fetched from NHTSA July 19, 2026

How to use these: a complaint is one owner’s report, filed voluntarily and published unverified. Patterns matter more than any single story. If several owners describe the same failure at similar mileage, put that system at the top of your pre-purchase inspection list. Back to the full 2018 Mercedes-benz Sprinter 3500xd Crew Van verdict →