WASHINGTON— The Environmental Protection Agency today released its annual Automotive Trends Report, which shows that automakers made little progress against pollution. But what improvements they did make were mostly due to tougher Biden emissions standards, which the Trump EPA has now killed. The latest report, which covers model year 2024, shows that automakers continue to sell millions of gas guzzlers and a relative handful of electric and other clean vehicles.

“This report shows how badly we need strong clean car standards even as Trump sends them to the morgue,” said Dan Becker, director of the Center for Biological Diversity’s Safe Climate Transport Campaign. “Even with the Biden standards, automakers failed to use the best technology on many of their vehicles and made a fleet that guzzles and pollutes too much. With Trump killing strong standards and eliminating penalties for cheating, automakers will be free to guzzle and pollute and consumers will be forced to pay for more gas at the pump.”

“Burning each gallon of gas pumps 25 pounds of carbon pollution into the air,” said Becker. “With every rollback, Trump is loading the atmosphere with more heat-trapping gas, which will worsen heat waves, droughts, floods, wildfires, and health-harming smog. Meanwhile Trump’s conceding the rest of the world’s auto and truck market to China, which understands that the future of transportation is electric. Chinese and other Asian carmakers are going to eat the U.S. auto industry’s lunch.”

The Trump-led attack on clean cars continued in this report. The EPA ceased publishing data on whether companies failed to comply with their standard, citing the Trump rollbacks.

Here are the key details in the Trends report:

• Automakers improved mpg by the smallest possible amount in 2024, 0.1mpg to 27.2 mpg. This contrasts with the 41% improvement in fleetwide fuel economy since 2005.
• EVs boosted the efficiency of the fleet. Without counting EVs in the fleet, the gas-powered fleet achieved 1.7% worse mileage than if EVs and plug-in hybrids were included.
• The three U.S.-based manufacturers — Stellantis (formerly Fiat Chrysler), GM, and Ford — again delivered the worst fuel efficiency and emitted the most pollution of all major carmakers that sell in the U.S. Tesla emitted the least.
• 93% of new vehicles are fossil fueled. Only 7% of 2024 vehicles were electric and 3% plug-in hybrids.
• EVs made up just 7% of the new vehicle fleet, down from 10% the prior year. The top EV producers were Tesla at 100%, BMW at 15%, Mercedes at 11, Hyundai and Kia each made 8% EVs. In contrast, Stellantis and Toyota each made 1% and Mazda made 0%.
• 10% of 2024 vehicles were hybrids. Leading hybrid producers were Toyota at 35% and Honda at 21%. Ford and Hyundai each made 12% hybrids.
• Fleet mpg rose from 24.9-27.2 over the past five years. But seven companies actually delivered worse fleet-wide gas mileage and emissions than they had five years ago: GM, VW, Mazda, Subaru, BMW, Kia and Hyundai.