CAFE Standards Reset Eases Auto Production, Freight Impact
The U.S. Finalized weaker CAFE standards for 2022-2031, shifting auto production toward heavier trucks and SUVs.
The U.S. Department of Transportation finalized the 'Freedom Means Affordable Cars' rule on Sept. 28, resetting CAFE standards with retroactive effect for model years 2022 through 2031. The rule lowers fuel economy targets, projecting a 34.9 mpg fleet average by 2031 and giving automakers flexibility to build more trucks and SUVs.
Standards lowered, automakers gain flexibility
The rule lowers fuel economy targets for model years 2022-2031, with annual increases of roughly 0.25% to 0.7%. This is a significant reduction from the prior trajectory targeting about 50 mpg by 2031. The final rule sets specific baselines for model year 2022 and allows electric vehicles to count toward compliance.
| Vehicle Type | Model Year 2022 Baseline Fuel Economy (mpg) |
|---|---|
| Passenger Cars | 37.4 |
| Light Trucks | 29.4 |
Automakers gain product-mix flexibility to build more trucks, SUVs, and internal combustion or hybrid vehicles without needing electric vehicle offsets. The USDOT estimates the rule will cut the average new-vehicle price by $1,300. "The department says it will cut the average new-vehicle price by $1,300 and save Americans $138 billion over five years," USDOT said.
Vehicle mix shift to affect freight volumes
The regulatory shift reinforces an existing trend toward heavier vehicles. In model year 2024, trucks and SUVs made up 66% of new vehicles, with SUVs alone accounting for half. The average new-vehicle weight hit a record 4,371 pounds in 2023, with the average new pickup outweighing the average new sedan by about 1,535 pounds. This weight increase likely means heavier loads for haulers and suppliers moving vehicles and components.
The best estimate for production impact is a 0.5% to 2% lift in light-vehicle output by 2027-2028. This translates to well under 0.1% of national truckload volume, with the freight impact concentrated in Midwest and Southeast auto markets.
Freight market shaped by capacity, not demand
Despite the potential for minor production gains, the freight market's trajectory is being dictated by capacity, not demand. SONAR data shows implied accepted truckload volume is roughly flat to down year over year. Yet tender rejections have nearly tripled. This signals that capacity leaving the market-not increased freight demand-is the real story in freight tightness through 2026.
Congress set the CAFE civil penalty to zero in July 2025, removing direct financial enforcement of the standards. Vehicle programs take 2 to 4 years to change, so any volume or mix shift from this rule will appear mostly in model years 2027-2029.
