2027 Mack Pioneer PR (4)

Do not drive

No owner complaints are on file for this vehicle. It has been recalled 4 times.

4 safety recalls

Part 573 reports
Exterior Lighting26V515000
Filed Aug 6, 2026513 vehiclesMack Trucks, Inc.

Defect. Mack Trucks, Inc. (Mack) is recalling certain 2027 Anthem AN (4) and Pioneer PR (4) vehicles. The center roof marker lights may fail to illuminate. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Risk. Marker lights that fail to illuminate can reduce visibility, increasing the risk of a crash.

Remedy. Dealers will replace the center roof marker light, free of charge. Owner notification letters are expected to be mailed October 5, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0498. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning August 13, 2026.

Wheels › Lugs/Nuts/Bolts/Studs26V351000Do not drive
Filed May 28, 2026644 vehiclesMack Trucks, Inc.

Defect. Mack Trucks, Inc. (Mack) is recalling certain 2026 Anthem (AN), 2026-2027 Pioneer PR (4), Pinnacle (PI/PN), Granite (GR), and 2027 Anthem AN (4) vehicles. The wheel lug nuts may loosen and allow the wheel to detach.

Risk. Wheel detachment can cause a loss of vehicle control or create a road hazard, increasing the risk of a crash or injury.

Remedy. Owners are advised not to drive their vehicles until the repair has been performed. Dealers will inspect the wheel and hub mating surfaces, remove any masking material, and replace any worn components if necessary, free of charge. Owner notification letters were mailed June 22, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0495. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov on May 31, 2026.

Service Brakes, Air › Antilock › Control Unit/Module26V261000
Filed Apr 23, 20262,772 vehiclesMack Trucks, Inc.

Defect. Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2026-2027 Anthem (4) vehicles. The rear brake modulators may have unprotected electrical connectors that can short circuit and lead to a loss of the anti-lock brake system (ABS) and electronic stability control (ESC).

Risk. A loss of anti-lock brakes and electronic stability control increases the risk of a crash or injury.

Remedy. Dealers will inspect the rear brake modulator electrical connectors, install a protective cover, and replace the rear brake modulators, as necessary, free of charge. Owner notification letters were mailed June 8, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0494. Vehicle Identification Numbers (VINs) involved in this recall will be searchable on NHTSA.gov beginning April 30, 2026.

Exterior Lighting › Turn Signal26V207000
Filed Apr 1, 202686 vehiclesMack Trucks, Inc.

Defect. Mack Trucks, Inc. (Mack) is recalling certain 2025-2027 Pioneer (4) and 2027 Anthem (4) trailers. The trailer turn signals may not function properly. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 108, "Lamps, Reflective Devices, and Associated Equipment."

Risk. Turn signals that do not function properly may fail to indicate the driver's intention to change vehicle direction, increasing the risk of a crash.

Remedy. Dealers will update the turn signal indicator software, free of charge. Owner notification letters were mailed May 7, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0493. Vehicle Identification Numbers (VINs) involved in this recall became searchable on NHTSA.gov April 1, 2026.

Across model years

Worst on record: 2027
YearComplaintsRecallsFiresDeathsAssessment
2027 — this page0400Do not drive
20260700Do not drive
202501100Do not drive

Compare every Pioneer PR (4) year →

Reading this record

NHTSA has issued a do-not-drive warning for a recall on this vehicle.

Complaint counts track how many cars were sold and how long they have been on the road as much as they track quality. A common model from 2013 has had a decade to accumulate reports; a rare one from last year has not. The signal worth weighing is in the severity columns, in whether the same component keeps appearing, and in whether the manufacturer eventually opened a recall for it.

Recall repairs are free for as long as the recall stands. Check whether a specific car still has open work at NHTSA's VIN lookup.

Most recent recall on file: Aug 6, 2026. Source: NHTSA Office of Defects Investigation.