There are 1 owner-reported powertrain & transmission complaints for the 2018 Ford F-550in NHTSA's database. These are unverified consumer reports and may not reflect confirmed defects.
The contact owns a 2018 Ford F-550. The contact stated while driving 65 MPH, the contact observed a humming sound coming from the rear-end of the vehicle. The vehicle was taken to an independent mechanic where it was diagnosed that the ring and pinion needed to be replaced. The vehicle was then taken to a dealer where it was diagnosed that the ring and pinion needed to be replaced. The manufacturer was notified of the failure. The failure mileage was 26,000.
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