No complaints are listed for the 2023 Thomas Built Buses SAF-T-Liner EFX. NHTSA's API and bulk file list none in this build.
Data build 2026-10-09.
NHTSA lists this vehicle as THOMAS BUILT BUSES SAF-T-LINER EFX.
Model-generated complaint tags: No complaints are listed for tagging.
Recalls
See new recalls and investigations this week.
6 recalls.
Date: 2026-02-13. Systems: ENGINE AND ENGINE COOLING.
Defect: 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.
Consequence: 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.
Do not drive: No. Park outside: No.
Date: 2026-02-13. Systems: ENGINE AND ENGINE COOLING.
Defect: 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.
Consequence: 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.
Do not drive: No. Park outside: No.
Date: 2023-04-07. Systems: STEERING.
Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2023 Thomas Built Buses SAF-T-LINER SAF-T-LINER C2 Jouley, Thomas Built Buses SAF-T-LINER EFX, Thomas Built Buses SAF-T-Liner HDX, Thomas Built Buses Chassis and 2023-2024 School Bus Chassis school buses. The tie rod may be missing a fastener, allowing the steer arm to detach.
Consequence: A detached steering arm can result in a sudden loss of steering control, increasing the risk of a crash.
Remedy: DTNA will inspect and repair or replace the tie rod assembly as necessary, free of charge. Owner notification letters were mailed August 11, 2023. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL970.
Do not drive: No. Park outside: No.
Date: 2022-10-12. Systems: STRUCTURE.
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."
Consequence: A school bus exterior roof panel with insufficient joint strength may separate during a crash, increasing the risk of injury.
Remedy: 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.
Do not drive: No. Park outside: No.
Date: 2022-07-20. Systems: STRUCTURE.
Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2023 Thomas Built Buses Saf-T-Liner EFX school buses. The buses may not have a sufficient number of emergency exits. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 217, "Bus Emergency Exits And Window Retention And Release."
Consequence: An insufficient number of emergency exits can delay passengers from exiting the vehicle during an emergency, increasing their risk of injury.
Remedy: Dealers will add an emergency exit roof hatch, free of charge. All vehicles have been remedied. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL947.
Do not drive: No. Park outside: No.
Date: 2022-03-11. Systems: SEATS.
Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2023 Thomas Built Buses Saf-T-Liner EFX School Buses. The passenger seat mounting bolts may break due to improperly placed mounting that allows contact with the chassis cross member bolts. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 210, "Seat Belt Assembly Anchor (excerpt)
Consequence: A seat with broken mounting bolts may not properly restrain an occupant in a crash, increasing their risk of injury. (excerpt)
Remedy: Dealers will add a spacer to provide proper clearance between the passenger seat mounting and chassis cross member bolts, free of charge. Owner notification letters were mailed June 2, 2022. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-921. (excerpt)
Do not drive: No. Park outside: No.
Manufacturer communications
22 manufacturer communications.
Communications by system| System | Count |
|---|
| ENGINE | 7 |
|---|
| UNKNOWN OR OTHER | 5 |
|---|
| EXTERIOR LIGHTING | 2 |
|---|
| SEATS | 2 |
|---|
| WHEELS | 2 |
|---|
| ELECTRICAL SYSTEM | 1 |
|---|
| STEERING | 1 |
|---|
| STRUCTURE | 1 |
|---|
11035528
Date: 2026-07-06. Type: Service Bulletin/Repair Instructions. Systems: UNKNOWN OR OTHER.
Technical Service Bulletin for Electrical Wiring Modifications for Type DFootwell Heater
11031983
Date: 2026-04-24. Type: Other. Systems: VISIBILITY/WIPER.
Service Solution for EFX AC Upper bracket TBB 130987 replaced with TBB 248310
11030622
Date: 2026-03-20. Type: Other. Systems: ELECTRICAL SYSTEM.
Service Solution for Timer relay TBB 202400 replacement
11028074
Date: 2026-01-26. Type: Other. Systems: UNKNOWN OR OTHER.
Service Solution for EFX Shock Mount Frame Rail Crack Repair
11023661
Date: 2025-09-09. Type: Other. Systems: UNKNOWN OR OTHER.
My communications for DTNA Announces Extended Coverage Policy Updates
11019796
Date: 2025-06-17. Type: Other. Systems: UNKNOWN OR OTHER.
Service Solution for Floor Covering Bubbles
11014787
Date: 2025-02-05. Type: Other. Systems: EXTERIOR LIGHTING.
Service Solution for HDX / EFX front lighting replacement
11011106
Date: 2024-11-20. Type: Other. Systems: STEERING.
Service Solution for Power steering Pump TBB 61280827 replacement with TBB 246122
11011076
Date: 2024-11-11. Type: Warranty Program/Extension. Systems: ENGINE.
Warranty Information letter for Detroit Line or Line Seal, High Pressure Fuel Injector Standard Repair Time Updates
11010186
Date: 2024-10-17. Type: Other. Systems: ENGINE.
CX Advocate for CARB tightening the Readiness Criteria applied to On-Board Diagnostic (OBD) test submissions for the Clean Truck Check.