Truck Buyers Hit Pause as OEMs Brace for Slower Demand

Truck buyers are taking a wait-and-see approach, OEMs say

North American Class 8 truck orders were mixed in September as fleets entered the traditional fall buying season while manufacturers managed full 2026 backlogs and transitioned to Model Year 2027 production.

ACT Research estimated preliminary North American Class 8 net orders at 18,700 units in September, a decline of 9.5% from the same month last year. FTR Transportation Intelligence reported a different preliminary result, placing September orders at approximately 21,300 units, up 3% year over year and 18% from August.

The difference between the two estimates reflects the uncertainty surrounding the market as truck buyers and manufacturers move between model years. ACT’s final September data, including complete industry results, is scheduled for release in mid-October.

September normally marks the beginning of the industry’s fall order season. This year, however, the transition has been less typical. Surcharge-free 2026 build slots are effectively sold out, while some original equipment manufacturers had not fully opened their 2027 order boards. That has made it more difficult for fleets to place orders on their usual timetable.

Regulatory uncertainty is also influencing purchasing decisions. The Environmental Protection Agency has not yet finalized its 2027 nitrogen oxide emissions rules, leaving fleets with questions about equipment specifications, pricing and the timing of new truck purchases.

“While sequential weakness in Class 8 orders is in line with normal patterns for this time of year, robust year-over-year gains highlight the continued influence of supply-side freight market constraints and regulatory clarity,” said Carter Vieth, a research analyst at ACT Research.

FTR said September represented the formal transition to Model Year 2027 ordering. The research firm also noted that the EPA 2027 emissions pre-buy has ended and that surcharge-free 2026 engine build slots are effectively sold out. Some manufacturers may have closed their 2026 order boards in early or mid-August before opening their 2027 books, potentially shifting some deferred orders into September.

For fleets, the timing matters because an order does not necessarily translate into an immediately available truck. A full backlog can push deliveries further into the future, while a closed order board may leave buyers waiting for the next model-year allocation. That can affect replacement schedules for older tractors and the ability of carriers to plan equipment expenses.

Both research firms pointed to continued support for truck demand from replacement needs, tighter capacity and improving freight economics. FTR said firmer freight rates were helping support orders, although it also identified fuel costs, financing conditions and uneven freight activity as counterforces.

ACT’s commentary on August orders similarly cited improving freight economics, replacement demand and regulatory planning as factors supporting tractor demand. At the same time, the company said late-summer seasonality, full 2026 backlogs and the timing of 2027 order boards had affected monthly order activity.

The competing September estimates do not necessarily indicate a sharp change in the underlying market. Instead, they show how order totals can vary depending on the data used and how manufacturers process cancellations, changes and pending orders. The final ACT figures should provide a more complete view of the month.

Medium-duty truck orders were stronger. ACT estimated preliminary North American Classes 5-7 net orders at 20,200 units in September, up 27% from a year earlier. Activity in that segment averaged about 19,500 units per month during 2026, slightly above its long-term average, as the market continued recovering from a weak 2025.

The Class 8 market has posted substantial gains earlier in the year, and FTR reported that orders through September totaled 263,499 units, up 95% year over year. Over the past 12 months, FTR said North American Class 8 orders totaled 351,244 units.

Those figures point to ongoing demand for heavy trucks, but September’s results also show why fleets may be cautious about committing to additional equipment. Buyers are balancing replacement needs and freight conditions against interest rates, operating costs, available production slots and unresolved emissions requirements.

For professional drivers, the order activity is an indicator of the equipment pipeline rather than an immediate measure of trucks entering service. The effects of September’s decisions will depend on when manufacturers open their 2027 order books, how quickly orders move into production and when those trucks are delivered to fleets.