Team Trump just finalized a rule that will make safer cars more accessible to Americans — and, in the midst of an unprecedented economic slowdown, the limousine left is assailing the administration for it.

The Safer Affordable Fuel-Efficient Vehicles Rule rolls back an Obama-era regulation that made US Corporate Average Fuel Economy standards some of the strictest in the world, beating even carbon-obsessed Europe. The change means that automakers’ fleets will have to average around 40 miles per gallon by 2025, not the 54 mpg set by the last administration in 2012.

That rule pretended that automakers could raise CAFE by 5 percent a year, every year, for decades. Now they’ll have to boost efficiency by about 1.5 percent annually, which is actually achievable.

Most Americans simply aren’t interested in tiny, difficult-to-maintain electric vehicles. (In much of the country, they simply don’t make sense since there’s nowhere to charge them.) The CAFE standards in place now raise the price of a car by an average of $3,800 — pricing some people out of the new-car market, so they keep on driving older, dirtier vehicles.

The administration estimates the new rule will lower the price of a new vehicle by about $1,000 — and cut costs for struggling American automakers by as much as $100 billion by the time 2030 models are rolled out.

As it stands, the average American’s car right now is 12 years old. The new rule could boost sales by 2.7 million over the next decade — retiring that many extra “clunkers” and so yielding a bigger reduction in actual carbon emissions. The green lobby is howling because it’s no longer in the driver’s seat — not because of any real harm.

With the US economy facing its starkest challenge in a century, measures like this are a must: Americans can’t afford symbolic environmental gestures when they’re worried about putting food on the table.