The worst 2025 Thomas Built Buses Saf-T-Liner HDX problems
Ranked by number of owner complaints. Mileage and cost come from what owners wrote.
Problems by type
Tap a problem to see which part fails, at what mileage and in which other years.
Recalls 3
Engine and engine cooling: cooling system: hoses/lines/piping/fittings
- What is wrong
- Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2023-2026 Saf-T-Liner EFX and Saf-T-Liner HDX school buses. The heater hose clamps may not have been tightened properly, causing the hose to disconnect and leak heating coolant inside the passenger compartment.
- Risk
- Contact with hot heating coolant may burn occupants, increasing the risk of injury.
- Remedy
- Dealers will inspect and replace the heater hose clamps, as necessary, free of charge. Owner notification letters were mailed April 10, 2026. Owners may contact DTNA customer service at 1‑800‑547‑0712. DTNA's number for this recall is F1030.
Recall number 26V086000 · Recall details
Engine and engine cooling: cooling system: hoses/lines/piping/fittings
- What is wrong
- Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2023-2025 Saf-T-Liner EFX and 2023-2026 Saf-T-Liner HDX vehicles. The heater hose clamps may not have been tightened properly, causing the hose to disconnect and leak heating coolant inside the passenger compartment.
- Risk
- Contact with hot heating coolant may burn occupants, increasing the risk of injury.
- Remedy
- Dealers will inspect and replace the heater hose clamps, as necessary, free of charge. Owner notification letters were mailed April 10, 2026. Owners may contact DTNA customer service at 1‑800‑547‑0712. DTNA's number for this recall is F1030.
Recall number 26V087000 · Recall details
Steering: critical fasteners
- What is wrong
- Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2025-2026 Saf-T-Liner HDX, Saf-T-Liner C2, 2026 Saf-T-Liner EFX, and Saf-T-Liner C2 Jouley school buses. The tie rod castle nut and cotter pin may not be installed properly, which can result in a loss of vehicle steering control.
- Risk
- A loss of vehicle steering control increases the risk of a crash.
- Remedy
- Dealers will inspect and replace the tie rod assembly, as necessary, free of charge. Owner notification letters were mailed November 10, 2025. Owners may contact DTNA customer service at 1‑800‑547‑0712. DTNA's number for this recall is D25R2.
Recall number 25V604000 · Recall details
See all 3 recalls for the 2025 Thomas Built Buses Saf-T-Liner HDX
Technical service bulletins for the 2025 Thomas Built Buses Saf-T-Liner HDX 15
Bulletins tell dealers how to fix known problems. A warranty extension means the manufacturer pays for that repair for longer.
- Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair...
- Service Solution for HDX DEF Header Service Replacement Additional Parts
- Service Solution for Timer relay TBB 202400 replacement
- My communications for DTNA Announces Extended Coverage Policy Updates
- Service Solution for Floor Covering Bubbles
- Service Solution for HDX / EFX front lighting replacement
- Service Solution for Wiper Module TBB 61201552 replacement
- CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test...
- Service Solution for Detroit Successful Regen Reference for GHG17 DD Engines
- Draft Fuel Injection Cleaning Machine (FICM) Setup Instructions
See all 15 bulletins for the 2025 Thomas Built Buses Saf-T-Liner HDX
Compare the 2025 Thomas Built Buses Saf-T-Liner HDX
Other model years
Questions about the 2025 Thomas Built Buses Saf-T-Liner HDX
Is the 2025 Thomas Built Buses Saf-T-Liner HDX reliable?
Owners have filed 0 complaints about the 2025 Thomas Built Buses Saf-T-Liner HDX.
What is the most common problem with the 2025 Thomas Built Buses Saf-T-Liner HDX?
There are not enough complaints to tell.
How many recalls does the 2025 Thomas Built Buses Saf-T-Liner HDX have?
3 recalls, covering engine and engine cooling and steering.
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