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RECALLROADTHE CAMPAIGN RECORD

MODEL-YEAR RECALL REPORT

2020 Thomas Built Buses Saf-T-Liner Efx recalls

NHTSA's September 21, 2026 snapshot lists 8 safety recall campaigns for the 2020 Thomas Built Buses Saf-T-Liner Efx, spanning 5 component groups. A model match does not confirm that a specific VIN is included.

Official source: NHTSA recall campaign file · Snapshot September 21, 2026

Distinct campaigns8not VIN-specific
Component groups5distinct top-level categories
Latest recordJuly 24, 2024report received
VIN resultNot checkeduse official lookup

01 / OFFICIAL CAMPAIGNS

2020 Thomas Built Buses Saf-T-Liner Efx recall campaigns

The 2020 Thomas Built Buses Saf-T-Liner Efx report contains 8 distinct NHTSA campaigns; the most recently received record is campaign 24V555000 dated July 24, 2024.
Component
EQUIPMENT
Report received
July 24, 2024
Potential units
27,494campaign-wide
Defect and consequence

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain Thomas Built Buses 2019-2022 Saf-T-Liner C2, Saf-T-Liner EFX, Saf-T-Liner HDX, Minotour DRW, 2020-2022 Saf-T-Liner C2 Jouley, and Minotour SRW school buses. The Emergency Exit Label lettering is too small and may be difficult to read. 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.".

Why it matters: Emergency exit labels that are difficult to read can prevent or delay the use of the emergency exit, increasing the risk of injury.

Remedy

Dealers will correct the lettering, free of charge. Owner notification letters were mailed September 5, 2024. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL918.

Owner notification: September 5, 2024 · Filing manufacturer: Daimler Trucks North America, LLC

Component
STRUCTURE
Report received
October 12, 2022
Potential units
17,613campaign-wide
Defect and consequence

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.".

Why it matters: 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.

Owner notification: June 2, 2023 · Filing manufacturer: Daimler Trucks North America, LLC

Component
SEATS
Report received
July 19, 2022
Potential units
1,806campaign-wide
Defect and consequence

Defect: 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.

Why it matters: 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.

Owner notification: December 4, 2023 · Filing manufacturer: Daimler Trucks North America, LLC

CAMPAIGN

NHTSA 22V153000

Component
SEATS
Report received
March 11, 2022
Potential units
539campaign-wide
Defect and consequence

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 Anchorage" and 222, "School Bus Passenger Seating and Crash Protection.".

Why it matters: A seat with broken mounting bolts may not properly restrain an occupant in a crash, increasing their risk of injury.

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.

Owner notification: June 2, 2022 · Filing manufacturer: Daimler Trucks North America, LLC

CAMPAIGN

NHTSA 21V850000

Component
ELECTRICAL SYSTEM
Report received
November 2, 2021
Potential units
1,434campaign-wide
Defect and consequence

Defect: Daimler Trucks North America, LLC (DTNA) is recalling certain 2020-2022 Thomas Built EFX and HDX school buses. The nut for the power cable stud on the alternator may not have been tightened properly, which can cause a loose cable connection.

Why it matters: A loose power cable connection may cause electrical arcing, which can increase the risk of a fire.

Remedy

Dealers will inspect the alternator power cable connection and tighten it if necessary, free of charge. Owner notification letters were mailed on December 17, 2021. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL904.

Owner notification: December 17, 2021 · Filing manufacturer: Daimler Trucks North America, LLC

CAMPAIGN

NHTSA 20V126000

Component
SERVICE BRAKES, AIR
Report received
March 3, 2020
Potential units
581campaign-wide
Defect and consequence

Defect: Daimler Trucks North America LLC (DTNA) is recalling certain 2019-2020 Thomas Built Saf-T-Liner HDX, EFX, and C2 school buses equipped with air disc brakes. The brake caliper mounting bolts may have been insufficiently tightened.

Why it matters: Loose brake caliper mounting bolts can reduce brake effectiveness, increasing the risk of a crash.

Remedy

DTNA will notify owners, and dealers will inspect and repair the vehicles, free of charge. The recall began May 2, 2020. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-845.

Owner notification: May 2, 2020 · Filing manufacturer: Daimler Trucks North America LLC

Component
SEATS
Report received
October 4, 2019
Potential units
53,528campaign-wide
Defect and consequence

Defect: 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.".

Why it matters: 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.

Owner notification: June 22, 2020 · Filing manufacturer: Daimler Trucks North America LLC

CAMPAIGN

NHTSA 19V550000

Component
STRUCTURE
Report received
July 25, 2019
Potential units
3,080campaign-wide
Defect and consequence

Defect: Daimler Trucks North America LLC (DTNA) is recalling certain 2019-2020 Thomas Built Minotour, Saf-T Liner C2, Saf-T Liner EFX, and Saf-T Liner HDX school buses equipped with Safe Fleet Prolo Roof Escape hatches. Due to a manufacturing issue, the roof hatch external handle may unexpectedly break under reasonable use.

Why it matters: If the roof hatch external handle breaks, in the event of an emergency, the hatch cannot be easily opened from outside the vehicle, increasing the risk of injury.

Remedy

DTNA will notify owners, and dealers will install a new handle, free of charge. Owners were issued an interim notification on September 13, 2019. The recall began November 15, 2019. Owners may contact DTNA customer service at 1-800-547-0712. DTNA's number for this recall is FL-819.

Owner notification: November 15, 2019 · Filing manufacturer: Daimler Trucks North America LLC

02 / COMPONENT BREADTH

What defects are listed for the 2020 Thomas Built Buses Saf-T-Liner Efx?

The most frequent component groups in 2020 Thomas Built Buses Saf-T-Liner Efx campaign records are Seats (3), Structure (2), Service Brakes, Air (1), Electrical System (1), Equipment (1); these counts describe filed campaigns rather than observed failure rates.
Seats3
Structure2
Service Brakes, Air1
Electrical System1
Equipment1