There are 1 owner-reported engine complaints for the 2025 Ford F-350in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2025 Ford F-350 SD. The contact stated that while driving at an undisclosed speed, the DEF (Diesel Exhaust Fluid) level reading became inoperable with the message “500 Miles to Empty - Refill Soon” displayed. The vehicle was taken to the dealer but was not diagnosed. The contact was informed that the DEF gauge had been replaced by the dealer. The vehicle was repaired; however, the failure recurred. The manufacturer was made aware of the failure. The failure mileage was approximately 15,512.
Complaints are unverified consumer reports submitted to NHTSA. A high complaint count may reflect vehicle popularity, not defect severity. Data sourced from NHTSA public records.
Data synced from NHTSA on May 4, 2026