In a briefing that was expected to focus solely on fuel economy rollbacks, President Donald Trump delivered an unexpected twist on Wednesday: he wants kei-size microcars, the wildly popular tiny vehicles seen across Japan and parts of Asia, to finally enter the American market.
The announcement, made from the Oval Office, caught even members of his own administration off guard, including U.S. Secretary of Transportation Sean Duffey, who stood beside Trump looking visibly startled but supportive.
A Shift in the Fuel Economy Narrative
Trump’s primary purpose on Wednesday was to outline his administration’s plan to reverse another Biden-era fuel efficiency policy. Midway through the announcement, he pivoted to what he described as “a win for American drivers who want affordable, fun cars.”
According to Trump, the inspiration came from his recent trip to Asia, where he saw kei cars, compact, sub-660cc vehicles buzzing through crowded cities. He called them “cute,” “efficient,” and “beautiful,” adding that he was surprised to learn that such cars cannot be sold in the U.S. under current regulations.
He stated that Secretary Duffey has now been “tasked with clearing the regulatory pathway” to allow these microcars onto American roads.
What Kei Cars Actually Are
Kei cars, born from post-war Japanese regulations, are tiny by design. They must adhere to strict dimensional limits and feature engines no larger than 660 cc. Yet within those rules, the segment is wildly creative, everything from boxy delivery vans to quirky pickup trucks to mid-engine sports cars like the Honda Beat and Autozam AZ-1.
They are cherished in Japan for their low running costs, excellent fuel efficiency, and ability to thread through narrow urban streets. In size, many are dwarfed even by the Mazda Miata.
Regulatory Hurdles Remain
Before Americans begin lining up at Honda or Toyota dealerships, major policy steps remain unfinished. Secretary Duffey’s reaction alone suggested that the regulatory overhaul is more aspiration than a finalized plan.
One non-negotiable condition Trump emphasized: any kei-style vehicles sold in the U.S. must be manufactured domestically. That means Japanese automakers would need to open or repurpose factory capacity in the States, a tall order, but not impossible.
Relaxed regulations could also revive interest among American carmakers, who exited the small-car segment years ago as buyers shifted toward SUVs and trucks.
Could Kei Cars Really Work in America?
If the regulatory barriers fall, kei cars would enter a market dominated by larger vehicles and safety standards far stricter than Japan’s. That leaves open questions about crashworthiness, pricing, and consumer appetite.
Still, Trump’s unexpected endorsement gives the tiny-car segment political visibility it never had. If automakers see an opportunity, the U.S. could, for the first time, see its own interpretation of a uniquely Japanese automotive idea.
For now, the industry is watching closely, waiting to see whether Wednesday’s surprise becomes actual policy or remains a headline-grabbing detour.
