U.S. regulator launches loosened fuel economy standards
How do the new NHTSA standards compare to the previous requirements for fuel economy?

The new NHTSA standards for fuel economy are more relaxed compared to the previous requirements. The new standards require an average fleet fuel economy of 50.4 mpg by 2031, down from the original requirement of 58 mpg by 2032. Additionally, the new standards require a 2% improvement in fuel efficiency per year for cars, while light trucks need to see a 4% improvement between the 2027 and 2032 model years2.
What annual improvement percentages are required for cars and light trucks under the new NHTSA rules?
What are the new fuel economy standards set by the National Highway Traffic Safety Administration (NHTSA) for 2031?

The National Highway Traffic Safety Administration (NHTSA) has announced new fuel economy standards requiring an average fleet fuel economy of 50.4 miles per gallon (mpg) by 2031 for the Corporate Average Fuel Economy (CAFE) rules. The standards also require a 2 percent improvement in fuel efficiency per year for cars, while light trucks will need to see a 4 percent improvement between the 2027 and 2032 model years. These new standards are down from the original requirement, which stated that vehicles and light trucks should reach a fuel economy average of 58 mpg by 2032.