VehicleVerdict

2021 New Flyer Xd40 problems

Verdict · NHTSA data

Limited data — recalls on file

NHTSA has just 0 complaints on file for the 2021 New Flyer Xd40 — too few to judge reliability from owner reports alone — but 6 recall campaigns apply to this year, so any used example should have its VIN checked for completed recall work.

0

NHTSA complaints

6

Recalls

0

Investigations

0

Crash-involved

0

Fires reported

0

Injuries

0

Deaths

NCAP overall

Does the 2021 New Flyer Xd40 have recalls?

6 NHTSA recall campaigns on file. Recall repairs are free at franchised dealers.

25V898000Electrical SystemDecember 19, 2025 · 6,673 units

Defect

New Flyer of America, Inc. (New Flyer) is recalling certain XD35, XDE35, XE35, XN35, XD40, XDE40, XE40, XHE40, XN40, XT40, XD60, XDE60, XE60, XN60, XT60, and XHE60 transit buses. Please refer to New Flyer's recall report for specific model year information. The antilock braking (ABS) and electronic stability control (ESC) module may lose communication and fail without illuminating the warning lights. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard numbers 121, "Air Brake Systems" and 136, "Electronic Stability Control Systems on Heavy Vehicles."

Consequence

An ABS or ESC warning light that fails to illuminate will not alert the driver to the loss of ABS or ESC, increasing the risk of a crash.

Remedy

New Flyer will update the software, free of charge. Owner notification letters were mailed February 17, 2026. Owners may contact New Flyer's customer service at 1-800-241-2947.

23V722000TransmissionOctober 26, 2023 · 2,351 units

Defect

New Flyer of America, Inc. (New Flyer) is recalling certain 2019-2024 XD35, XD40, XN35, and XN40 transit buses. The transmission yoke may separate, resulting in driveshaft separation and a sudden loss of drive power.

Consequence

A sudden loss of drive power can increase the risk of a crash.

Remedy

New Flyer will work with the equipment manufacturer, Allison Transmission Inc., to inspect, and if necessary, tighten loose transmission yoke bolts, free of charge. Owner notification letters were mailed December 9, 2023. Owners may contact New Flyer customer service at 1-800-241-2947. New Flyer's number for this recall is R23-20.

22V637000SteeringAugust 24, 2022 · 55 units

Defect

New Flyer of America, Inc. (New Flyer) is recalling certain 2021-2022 XD40, XD60, XDE40, 2022 XN35, XE40, XN40, and 2021 XN60 transit buses. The steering gears may have been incorrectly assembled, which can cause the gear to fracture.

Consequence

A fractured steering gear can cause a loss of steering control, increasing the risk of a crash.

Remedy

Dealers will inspect and replace the steering gear if required, free of charge. Owner notification letters were mailed on September 2, 2022. Owners may contact New Flyer's customer service at 1-204-224-6706. New Flyer's number for this recall is R22-026.

21V576000Fuel SystemJuly 28, 2021 · 30 units

Defect

New Flyer of America, Inc. (New Flyer) is recalling certain 2021 XD40 and XD35 vehicles equipped with Cummins L9 Diesel engines that have remote Stage 2 fuel filters and pressurized hoses. A fuel leak may occur from the fuel hose between the fuel pump and the remote fuel filter head.

Consequence

A fuel leak in the presence of an ignition source increases the risk of a fire.

Remedy

Cummins will replace the fuel hoses, free of charge. Owner notification letters were mailed on August 3, 2021. Owners may contact New Flyer's customer service at 1-204-224-6706.

21V532000EngineJuly 14, 2021 · 28 units

Defect

New Flyer of America, Inc. (New Flyer) is recalling certain 2021 XD35 and XD40 vehicles equipped with 2021 Model Year Cummins L9 Diesel Engines. The engine calibration software's management of the injection of Diesel Exhaust Fluid can allow excessive ammonia to be emitted from tailpipe exhaust.

Consequence

Exposure to high levels of ammonia can increase the risk of injury.

Remedy

Cummins will recalibrate the engine, free of charge. Owner notification letters were mailed on July 23, 2021. Owners may contact New Flyer's customer service at 1-800-204-224-6706. New Flyer's number for this recall is R21-013.

21V365000Fuel SystemMay 18, 2021 · 3,600 units

Defect

New Flyer of America, Inc. (New Flyer) is recalling certain 2017-2021 XD40, XD35, 2016-2021 XD60, 2017 XDE35, 2016-2020 XDE40, XDE60 vehicles. The sealing washer may not seat correctly in the pilot bore holes, allowing the high pressure fuel rail assembly to leak.

Consequence

A fuel leak in the presence of an ignition source increases the risk of a fire.

Remedy

New Flyer will inspect the rail threads, and replace the rail as necessary, free of charge. Owner notification letters were mailed on June 28, 2021. Owners may contact New Flyer customer service at 1-204-224-6706. New Flyer's number for this recall is R21-008.

2021 New Flyer Xd40 — common questions

Is the 2021 New Flyer Xd40 reliable?

The record is thin — 0 NHTSA complaints — so owner-report data can't strongly confirm reliability either way, though 6 recalls should be verified as completed.

Does the 2021 New Flyer Xd40 have recalls?

Yes — NHTSA lists 6 recall campaigns affecting the 2021 New Flyer Xd40. Recall repairs are free at franchised dealers; check the VIN at nhtsa.gov/recalls to confirm the work was done.

Related

Based on NHTSA ODI data through June 2026. Complaints are consumer-reported and unverified. Updated July 5, 2026.

Compiled by Sharon Ben-Moshe, Founder.