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2017 Thomas Built Buses SAF-T-Liner EFX recalls

Source: NHTSA data as of September 22, 2026. Last refreshed Sep 23, 2026, 2:43 AM UTC.

16 recalls found in NHTSA data as of September 22, 2026

For the 2017 Thomas Built Buses SAF-T-Liner EFX. These apply to the model and year, not to one particular vehicle: check your VIN to see whether yours is included and whether it has been repaired.

Has your Thomas Built Buses been repaired?

Recalls here come from NHTSA’s records for the model and year. Not every vehicle of a model is included in every recall, and this site can’t see whether a repair has been done. Only a VIN lookup can tell you that.

NHTSA’s VIN search doesn’t show recalls that were already repaired, recalls more than 15 years old, or some small manufacturers’ recalls. A Thomas Built Buses dealer can also check your VIN. Recall repairs are free.

2017 Thomas Built Buses SAF-T-Liner EFX recalls, newest first

October 12, 2022NHTSA 22V76200017,613 vehicles potentially affected

Structure › Body › Roof and pillars

Summary
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.

This recall on nhtsa.gov

July 19, 2022NHTSA 22V5100001,806 vehicles potentially affected

Seats › Mid/rear assembly

Summary
Daimler Trucks North America, LLC (DTNA) is recalling certain 2014-23 Thomas Built Buses HDX and 2014-22 EFX school buses equipped with 39-inch S3C seat frames and 3-point flex seatbelts. The passenger seat frames may crack and rotate from fatigue.
Consequence
Cracked passenger seat frames may not adequately secure passengers in the event of a crash, increasing the risk of injury.
Remedy
Dealers will secure the seat frames with brackets, free of charge. Owner notification letters were mail December 4, 2023. Owners may contact DTNA's customer service at 1-800-547-0712. DTNA's number for this recall is FL946.
Components
Seats › Mid/rear assembly; Seats

This recall on nhtsa.gov

October 4, 2019NHTSA 19V71200053,528 vehicles potentially affected

Seats

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2014-2020 Thomas Built Saf-T-Liner EFX, Minotour, Saf-T-Liner C2, and Saf-T-Liner HDX school buses equipped with SynTec S3B or S3C seats. The seats may have been manufactured with styrene blocks that may not provide sufficient impact absorption in certain specific areas around the steel seat frame of the back support. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 222, "School Bus Passenger Seating and Crash Protection."
Consequence
The lack of impact absorption increases the risk of injury in the event of a crash.
Remedy
DTNA will notify owners, and dealers will install additional impact material between the re-bond back and the vinyl back cover to increase the amount of absorption, free of charge. DTNA issued owners an interim notification on November 29, 2019. The recall began June 22, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-832.

This recall on nhtsa.gov

June 11, 2019NHTSA 19V44400011,546 vehicles potentially affected

Service brakes, air › Disc

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2010-2020 Thomas Built Buses Saf-T-Liner C2, 2016-2019 HDX, and 2017-2019 EFX school buses equipped with Bendix Air Disc Brakes. The driver side rear brakes may drag.
Consequence
The dragging brakes may lead to high temperatures at the wheel end, increasing the risk of smoke and fire, possibly resulting in the bus having to be evacuated, which can increase the risk of injury.
Remedy
DTNA will notify owners, and dealers will install a new caliper with an updated clearance adjustment mechanism, free of charge. The recall began August 9, 2019. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-818.

This recall on nhtsa.gov

June 15, 2018NHTSA 18V4100005 vehicles potentially affected

Service brakes, air › Supply › Check valve

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2018 Thomas Built Buses Saf-T-Liner EFX transit buses. The check valve for the air brake system may not be plumbed correctly which can cause the primary air system to not be isolated from the secondary air system.
Consequence
In the event of a rapid loss of air pressure in the secondary system, the incorrectly plumbed check valve can cause rapid air loss in both secondary and primary system, causing the parking brakes to activate suddenly. This will increase the risk of a crash.
Remedy
DTNA will notify owners, and dealers will inspect and repair the check valve as needed, free of charge. The recall began on August 12, 2018. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-774.

This recall on nhtsa.gov

June 15, 2018NHTSA 18V409000109 vehicles potentially affected

Service brakes, air › Supply › Check valve

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2018 Thomas Built Buses Saf-T-Liner EFX school buses. The check valve for the air brake system may not be plumbed correctly which can cause the primary air system to not be isolated from the secondary air system.
Consequence
In the event of a rapid loss of air pressure in the secondary system, the incorrectly plumbed check valve can cause rapid air loss in both secondary and primary system, causing the parking brakes to activate suddenly. This will increase the risk of a crash.
Remedy
DTNA will notify owners, and dealers will inspect and repair the check valve as needed, free of charge. The recall began on August 12, 2018. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-774.

This recall on nhtsa.gov

May 29, 2018NHTSA 18V3520002,767 vehicles potentially affected

Service brakes, hydraulic › Foundation components › Disc › Caliper

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2017-2019 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner EFX and Saf-T-Liner HDX school buses equipped with air disc brakes. The brake caliper mounting bolts on these vehicles may be insufficiently tightened, allowing the bolts to loosen.
Consequence
If the brake caliper mounting bolts come loose, braking performance may be reduced, increasing the risk of a crash.
Remedy
DTNA will notify owners, and dealers will inspect the brake caliper mounting bolts and tighten them as necessary, free of charge. DTNA issued owners an interim notification on July 25, 2018. The recall began September 4, 2018. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-772.

This recall on nhtsa.gov

April 19, 2018NHTSA 18V25400024 vehicles potentially affected

Seats

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2014-2018 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner EFX, Saf-T-Liner HDX, and Minotour transit buses, equipped with certain S3B Restraint Wall Mounted Seats. The wall mounting bracket may crack, causing the seat to not remain secured in place in the event of a crash.
Consequence
In the event of a crash, if the seat does not remain secured to the wall, the occupant has an increased risk of an injury.
Remedy
DTNA will notify owners, and dealers will install an additional wall mounting bracket, free of charge. Daimler issued an interim notification to owners on June 15, 20 18. The recall began January 3, 2019. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-769.

This recall on nhtsa.gov

April 19, 2018NHTSA 18V25300023,102 vehicles potentially affected

Seats

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2014-2018 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner HDX, Saf-T-Liner EFX, and Minotour school buses equipped with S3B Restraint Wall Mounted Seats. The wall mounting bracket may crack, causing the seat to not remain secured in place in the event of a crash.
Consequence
In the event of a crash, if the seat does not remain secured to the wall, the occupant has an increased risk of an injury.
Remedy
DTNA will notify owners, and dealers will install an additional wall mounting bracket, free of charge. Daimler issued owners an interim notification on June 12, 2018. The recall began January 3, 2019. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-769.

This recall on nhtsa.gov

March 26, 2018NHTSA 18V1930006 vehicles potentially affected

Seats

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2014-2018 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner HDX, Saf-T-Liner EFX, and Minotour transit buses, equipped with certain Syntec-brand S3B, Non-Restraint, Wall Mounted Seats. The wall mounting bracket may crack, which may cause the seat to not remain secured in place in the event of a crash.
Consequence
In the event of a crash, if the seat does not remain secured to the wall, the occupant has an increased risk of an injury.
Remedy
DTNA will notify owners, and dealers will install an additional wall mounting bracket, free of charge. DTNA issued an interim notification to owners on May 10, 2018. The recall began May 10, 2018. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-763.

This recall on nhtsa.gov

March 26, 2018NHTSA 18V1920006,606 vehicles potentially affected

Seats

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2014-2018 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner HDX, Saf-T-Liner EFX, and Minotour school buses, equipped with certain Syntec-brand S3B, Non-Restraint, Wall Mounted Seats. The wall mounting bracket may crack, which may cause the seat to not remain secured in place in the event of a crash.
Consequence
In the event of a crash, if the seat does not remain secured to the wall, the occupant has an increased risk of an injury.
Remedy
DTNA will notify owners, and dealers will install an additional wall mounting bracket, free of charge. DTNA issued an interim notification to owners on May 9, 2018. The recall began May 10, 2018. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-763.

This recall on nhtsa.gov

November 17, 2017NHTSA 17V72900051 vehicles potentially affected

Seat belts

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2016-2017 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner EFX, Saf-T-Liner HDX, and Minotour SRW school buses, equipped with IMMI-brand 3-point lap and shoulder belts. Under load, the seat belt buckle mount rod can fracture. As such, these seats fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 210, "Seat Belt Assembly Anchorages."
Consequence
In the event of a crash, if the buckle mount rod fractures, the seat occupant may not be restrained, increasing their risk of injury.
Remedy
DTNA will notify owners, and dealers will replace the seat belt buckle rods, free of charge. DTNA issues owners an interim notification on December 11, 2017. The recall began on May 23, 2018. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-753.

This recall on nhtsa.gov

May 11, 2017NHTSA 17V3130001,132 vehicles potentially affected

Seats

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain 2014-2018 Thomas Built Buses Saf-T-Liner EFX and Saf-T-Liner HDX school buses. The occupant seats may have been installed without under-rail washers, reducing their anchorage strength.
Consequence
Without under-rail washers, in the event of a crash, the seats may come loose, increasing the risk of injury.
Remedy
DTNA will notify owners, and dealers will inspect the seats and replace the mounting hardware, as necessary, free of charge. The recall began on June 28, 2017. Owners may contact DTNA Customer Service 1-800-547-0712. DTNA's number for the recall is FL-737.

This recall on nhtsa.gov

August 31, 2016NHTSA 16V629000958 vehicles potentially affected

Equipment adaptive/mobility

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain model year 2015-2017 Thomas Built Buses Safe-T-Liner C2, Saf-T-Liner HDX, Saf-T-Liner EFX, and Minotour DRW school buses manufactured July 15, 2014, to July 21, 2016, and equipped with certain model S2005, S2010, S5005, S5010, S5505, and S5510 wheelchair lifts by Ricon. The affected lifts are equipped with folding link arms that may have pivot holes that are too big, allowing the bearings to move out of position.
Consequence
If the bearings move out of position, the stowed platform may have excessive movement resulting in failure of the platform mounting. This failure could cause the wheel chair lift platform to fall out of the vehicle when the doors are opened, increasing the risk of injury for the lift operator.
Remedy
DTNA will notify owners, and Ricon dealers will inspect the link arms for damage or for displaced bearings. The platform will be inspected for cracks. Any damaged parts will be replaced, free of charge. The recall began on October 10, 2016. Owners may contact DTNA customer service at 1-800-547-0712, or Ricon customer service at 1-800-322-2884 or by email at admin16E020@wabtec.com. DTNA's number for this recall is FL-716.

This recall on nhtsa.gov

February 10, 2016NHTSA 16V080000878 vehicles potentially affected

Other › School bus stop arm assembly

Summary
Daimler Trucks North America LLC (DTNA) is recalling certain model year 2016-2017 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner HDX, Saf-T-Liner EFX, and Minotour DRW school buses manufactured from May 1, 2015, through November 16, 2015, equipped with certain Transpec T6000, T6100, and T7000 series school bus stop arms. The affected stop arms have a reflective decal that may peel loose from the stop arm. As such, these stop arms fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 131, "School Bus Pedestrian Safety Devices."
Consequence
Without a reflective decal, the stop arms would have reduced visibility to other drivers, increasing the risk of a crash.
Remedy
DTNA will notify owners, and the stop arm blade assemblies will be replaced, free of charge. The recall began on April 11, 2016. Owners may contact DTNA customer service at 1-800-745-8000 or Transpec at 1-800-547-0712. DTNA's number for this recall is FL-700.

This recall on nhtsa.gov

December 15, 2015NHTSA 15V843000508 vehicles potentially affected

Seats

Summary
Daimler Trucks North America, LLC (DTNA) is recalling certain model year 2016-2017 Thomas Built Buses Saf-T-Liner C2, Saf-T-Liner HDX, Minotour DRW and Saf-T-Liner EFX school buses manufactured August 19, 2014, to October 22, 2015, and equipped with certain Syntec S3B Track Mounted Seats in 30", 36", 39" and 45" widths. In the event of a severe rear-end collision, the seats may tilt rearward. As such, these seats fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) 222, "School Bus Passenger Seating and Crash Protection."
Consequence
In the event of a severe rear-end collision, the seats may tilt rearward and result in injuries to the passenger's knees and/or impede the exiting of the bus.
Remedy
DTNA will notify owners, and dealers will install a toe-clamp on the front feet of the S3B track mounted seats, free of charge. The recall began on January 21, 2016. Owners may contact DTNA customer service at 1-800-745-8000, or Syntec customer service at 1-800-547-0712. DTNA's number for this recall is FL-698.

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 2017 Thomas Built Buses SAF-T-Liner EFX were found in NHTSA’s complaint data.

Other Thomas Built Buses SAF-T-Liner EFX years

Other 2017 Thomas Built Buses models

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All of 2017’s most recalled vehicles

Questions

Does the 2017 Thomas Built Buses SAF-T-Liner EFX have any recalls?
16 recalls found in NHTSA data as of September 22, 2026, covering: structure, seats, service brakes, air, service brakes, hydraulic, seat belts, equipment adaptive/mobility. Recalls apply to the model and year; whether a particular vehicle is included, and whether it has been repaired, depends on its VIN.
How do I check if my 2017 Thomas Built Buses SAF-T-Liner EFX recall has been fixed?
Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Thomas Built Buses dealer. Recall repairs are free. NHTSA's VIN search doesn't list recalls that were already repaired.
How many complaints have owners filed about the 2017 Thomas Built Buses SAF-T-Liner EFX?
0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.