Does the 2027 Mack Pioneer PR (4) have any recalls?

6 recalls found in NHTSA data as of November 8, 2026, covering: structure, service brakes, electric, exterior lighting, wheels, service brakes, air. 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 2027 Mack Pioneer PR (4) recall has been fixed?

Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Mack 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 2027 Mack Pioneer PR (4)?

0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.

2027 Mack Pioneer PR (4) recalls

Source: NHTSA data as of November 8, 2026. Last refreshed Nov 8, 2026, 6:01 PM UTC.

6 recalls found in NHTSA data as of November 8, 2026

For the 2027 Mack Pioneer PR (4). 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.

One of these recalls carries a manufacturer safety advisory to stop driving or to park outside until repaired. See below.

Has your Mack 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.

Check your VIN with NHTSA

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

2027 Mack Pioneer PR (4) recalls, newest first

October 1, 2026NHTSA 26V6310003,096 vehicles potentially affected

Structure › Body › Bumpers › Active shutters/grill

Summary: Mack Trucks, Inc. (Mack) is recalling certain 2026-2027 Anthem AN (4) and 2025-2027 Pioneer PR (4) vehicles. The intake and grille bezels may detach from the vehicle.
Consequence: A detached bezel can become a road hazard for other vehicles, increasing the risk of a crash.
Remedy: Dealers will inspect, replace the intake and grille bezels, and install cable ties as necessary, free of charge. Owner notification letters are expected to be mailed November 30, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0501. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov on October 8, 2026.
Components: Structure › Body › Bumpers › Active shutters/grill; Structure › Exterior trim

This recall on nhtsa.gov

September 28, 2026NHTSA 26V620000850 vehicles potentially affected

Service brakes, electric › Software/programming

Summary: 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.
Consequence: Reduced braking performance can require a greater distance to stop, increasing the risk of a crash.
Remedy: Dealers will install new software to disable the dynamic trailer braking calculations, free of charge. Owner notification letters are expected to be mailed November 27, 2026. Owners may contact Mack's customer service at 1-800-866-1177. Mack's number for this recall is SC0500. Vehicle Identification Numbers (VINs) involved in this recall will become searchable on NHTSA.gov on October 5, 2026.

This recall on nhtsa.gov

August 6, 2026NHTSA 26V515000513 vehicles potentially affected

Exterior lighting

Summary: 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."
Consequence: 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. Interim letters notifying owners of the safety risk were mailed September 22, 2026. Additional letters will be sent once the final remedy is available. 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.

This recall on nhtsa.gov

May 28, 2026NHTSA 26V351000644 vehicles potentially affected

Wheels › Lugs/nuts/bolts/studs

Do not drive until repaired

Summary: 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.
Consequence: 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.

This recall on nhtsa.gov

April 23, 2026NHTSA 26V2610002,772 vehicles potentially affected

Service brakes, air › Antilock › Control unit/module

Summary: 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).
Consequence: 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.

This recall on nhtsa.gov

April 1, 2026NHTSA 26V20700086 vehicles potentially affected

Exterior lighting › Turn signal

Summary: 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."
Consequence: 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.

This recall on nhtsa.gov

Owner complaints

No owner complaints about the 2027 Mack Pioneer PR (4) were found in NHTSA’s complaint data.

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Questions

Does the 2027 Mack Pioneer PR (4) have any recalls?: 6 recalls found in NHTSA data as of November 8, 2026, covering: structure, service brakes, electric, exterior lighting, wheels, service brakes, air. 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 2027 Mack Pioneer PR (4) recall has been fixed?: Enter your 17-character VIN at nhtsa.gov/recalls, or ask a Mack 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 2027 Mack Pioneer PR (4)?: 0 complaints filed with NHTSA. Complaints are unverified reports from the public that NHTSA uses to decide what to investigate.