The Trump administration is proposing new fuel economy standards for vehicles that would roll back efficiency rules implemented under former President Biden.

Under the Transportation Department proposal, which was unveiled at a White House event on Wednesday, automakers would need to meet less stringent vehicle mileage requirements.

Federal fuel economy rules are overseen by the National Highway Traffic Safety Administration (NHTSA) under what's known as the CAFE (Corporate Average Fuel Economy) Standards. Enacted by Congress in 1975, the regulations stipulate how many miles vehicles must be able to drive on a gallon of fuel, with specific standards for light-duty vehicles, as well as medium- and heavy-duty trucks.

The rules aim to reduce greenhouse gas emissions and help consumers s

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