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#BS-2027-MACPIO-5E1D2027 Mack Pioneer PR (4)Problems, Recalls & Reliability
Based on reports from 0 owners and 6 recalls for this exact model.
Data updated ·checked October 30, 2026 · NHTSA complaints through October 28, 2026
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Based on 0 complaints, 0 crashes, 0 fires, and 6 recalls.
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Recall History (6 recalls)
EXTERIOR LIGHTING:TURN SIGNAL
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."
SERVICE BRAKES, AIR:ANTILOCK:CONTROL UNIT/MODULE
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).
WHEELS:LUGS/NUTS/BOLTS/STUDS
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.
EXTERIOR LIGHTING
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."
SERVICE BRAKES, ELECTRIC:SOFTWARE/PROGRAMMING
Mack Trucks, Inc. (Mack) is recalling certain 2026-2027 Anthem AN (4) and Pioneer PR (4) vehicles equipped with a tanker application package. Inaccurate axle load calculations may cause reduced braking performance while transporting smoothbore tanker trailers.
+ 1 more recall in the full report
Recall severity analysis & seller scripts
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About this data
NHTSA Complaints
Federal database of owner-filed safety complaints. 0 records for this vehicle.
NHTSA Recalls
Manufacturer-issued safety recalls. 6 recalls found for this vehicle.
Repair Cost Data
Real-world repair costs from owner reports and independent databases.
Last updated (checked October 30, 2026). NHTSA complaints received through October 28, 2026.
2027 Mack Pioneer PR (4): Frequently Asked Questions
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