2011–2023 Thomas Built Buses Saf-T-Liner Efx, 2011–2023 Thomas Built Buses Saf-T-Liner HDX Recall: Exterior roof panel was manufactured with insufficient joint strength
NHTSA campaign 22V762000 · Structure · filed Oct 12, 2022 · verified Jul 30, 2026
The defect
Daimler Trucks North America, LLC (DTNA) is recalling certain 2011-2023 Thomas Built EFX and HDX school buses. The exterior roof panel was manufactured with insufficient joint strength. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 221, "School Bus Body Joint Strength."
The risk
A school bus exterior roof panel with insufficient joint strength may separate during a crash, increasing the risk of injury.
Check whether your specific vehicle is affected
Recall campaigns often cover only certain VIN ranges. Enter your VIN on the official NHTSA site to confirm whether your vehicle is included and whether the repair is still open.
Check VIN on NHTSA →The fix — what to do
Dealers will add additional mechanical fasteners to secure the joints, free of charge. Owner notification letters were mailed June 2, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL957.
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Affected vehicles
Related recalls
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Other campaigns involving Thomas Built Buses vehicles
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All Thomas Built Buses Saf-T-Liner Efx recalls → · All Thomas Built Buses recalls →
Source: NHTSA recall database, campaign 22V762000 (manufacturer number FL957). Data last verified Jul 30, 2026.