President Donald Trump announces plans to weaken fuel efficiency and emissions rules for cars and trucks in the Oval Office at the White House in Washington, DC, on December 3rd, 2025. The US Department of Transportation finalized its plans today to weaken fuel efficiency standards, calling it “among the largest deregulatory actions under the second Trump Administration.” It’s a nail in the coffin for Biden-era standards that would have required fleet average fuel economy to reach 50.4 miles per gallon by model year 2031. President Donald Trump’s plan requires 34.9 miles per gallon, not much higher than the 30.1-mile-per-gallon target previously set for model year 2024.

Consumer advocacy, health, and environmental groups are incensed by this move. They argue that Trump’s plan is more about appeasing the oil lobby than improving the environment or saving consumers money. After all, the difference between 50.4 mpg and 34.9 mpg could mean an extra $1,300 per vehicle in fuel savings over its lifetime, according to the administration. Yet, Trump’s plan cuts the target by almost 15 mpg, suggesting he might be trading long-term savings for short-term political gains.

Moreover, the environmental impact is significant. Higher fuel efficiency correlates with lower greenhouse gas emissions, so Trump’s reduction could add millions of extra tons of CO2 annually. It’s as if he’s saying, “Sure, the planet might warm a bit, but at least my buddies in the auto industry are happy!” The assumption here is that the market will quickly adapt to the new standards, but history shows that once a baseline is set, it’s hard to raise it again.

Finally, the health implications can’t be ignored. Cleaner air results from better fuel efficiency, reducing respiratory issues and healthcare costs. Trump’s plan might save $1,300 per car, but it could also cost consumers their health by exposing them to more smog and pollutants. Plus, the argument that the plan will lower car prices is debatable; the savings come from fuel efficiency, not necessarily from the cars themselves. So, while Trump touts deregulation as a win, the real winners might be the oil companies, while the environment and consumers take a back seat.

In essence, Trump’s rule to make cars less fuel efficient is a classic trade-off: he’s trading potential climate benefits and consumer savings for immediate industry relief. The question remains: is the $1,300 per car really worth sacrificing the future of cleaner, healthier, and more efficient driving?