Greensboro, NC — Mack and Volvo have issued a critical 'Do Not Drive' order for nearly 800 heavy-duty trucks due to a manufacturing defect that creates a severe risk of wheel separation. The recall involves approximately 644 Mack units and 155 Volvo units produced for the 2026 and 2027 model years. Drivers are being warned that the wheel-mounting surfaces on these vehicles may be compromised, leading to loose lug nuts and the potential for a wheel to break away from the hub while in motion.

This mechanical failure represents a significant safety hazard for any CDL-A driver or motorist on the road. The issue stems from improperly finished wheel and hub mating surfaces, which can prevent a secure connection. When these surfaces are not properly aligned or cleared of masking material, the torque applied to the lug nuts fails to hold, eventually allowing the wheel to wobble and detach. Manufacturers have mandated that these trucks remain stationary until a certified dealer can perform a thorough inspection and necessary repairs.

The recall campaign, which officially kicked off in early June 2026, covers a wide range of popular models including the Mack Anthem, Pinnacle, Pioneer, and Granite, along with the Volvo VAH, VNL, VN, VHD, and VNR series. Dealers are tasked with cleaning the mating surfaces to remove residual masking material and replacing any damaged hardware at no cost to the owner. Fleet managers and owner-operators who received notification letters should prioritize these repairs immediately to ensure compliance with safety standards and avoid costly downtime.

What This Means for Drivers

Any driver operating these specific 2026 or 2027 models must check their VIN against the manufacturer’s database immediately. If your assigned rig is on the list, you must pull it out of service until the dealer confirms the hub surfaces are corrected. Operating a vehicle under a 'Do Not Drive' order can lead to severe liability issues and potential violations of FMCSA regulations if a wheel separation incident occurs on the highway. OTR truck driver schedules are tight, but the risk of a catastrophic wheel-off event makes these repairs non-negotiable for professional operators.

Industry Reaction

Wheel detachment incidents remain a primary focus for safety advocates and regulatory bodies due to the high fatality rates associated with runaway tires. When major manufacturers like Mack and Volvo issue a total stop-drive order, it highlights the importance of pre-trip inspections and the role of the driver as the final line of defense against equipment failure. While carriers are often pressured to keep trucks moving to meet delivery windows, the industry consensus is that mechanical integrity must take precedence over freight deadlines. Trucking companies hiring today are expected to maintain strict adherence to these recall notices to protect their drivers and the public.

Key Points

• Total of 799 affected Mack and Volvo vehicles across various 2026-2027 model years.
• The defect involves masking material left on wheel and hub mating surfaces causing loose lug nuts.
• Repair process involves inspecting surfaces, removing debris, and replacing worn parts at no cost.
• Owner-operators should contact their local dealer immediately to schedule service, as these units are under a formal 'Do Not Drive' status.

Looking for a better trucking job? US Trucker's free job-matching service connects CDL-A drivers, OTR drivers, regional drivers, and owner-operators with 500+ top US carriers. Leave your details in the form on this page and a recruiter will call you within one business day. Trucking companies are hiring now.

Photo by BOOM 💥 Photography on Pexels