An analysis of the US heavy-duty vehicle market in 2024 shows a notable growth in zero-emission vehicle registrations, reaching 0.56% of total new registrations in the first half of the year. Zero-emission buses achieved a double-digit market share for the first time, with Traton and Daimler being the major manufacturers in this segment. In the truck market, Class 8 tractor trucks led the zero-emission market, while Class 4–6 rigid trucks also saw an increase in market share. Medium-duty trucks witnessed growth with Daimler dominating the zero-emission registrations. The heavy-duty truck market saw over 300 zero-emission registrations in both quarters, surpassing previous full-year data. Legacy manufacturers like Daimler, Paccar, and Volvo Truck hold a significant share in both ICE and zero-emission markets, while dedicated manufacturers like BYD and Tesla are also making strides. Overall, the zero-emission vehicle market in the US is showing positive trends and increasing market penetration.