US President Donald Trump has announced new fuel economy standards that reverse requirements set under former President Joe Biden, framing the move as a way to lower car prices and boost domestic manufacturing. Trump declared the changes would end what he called Biden's "EV mandate" — a term used by Republicans to describe higher fuel efficiency targets that effectively pushed automakers toward producing more electric vehicles, though no federal law actually requires Americans to buy EVs or bans petrol-powered cars. The new standards are expected to set the industry-wide average for light-duty vehicles at around 34.5 miles per gallon by 2031, compared with the 50.4 mpg target established under Biden, widening the gap between US policy and a global shift toward lower-emission vehicles.