The company recently filed to trademark the ‘Mach 4’ name in the United States. Last year, Ford reportedly showed dealers a sketch of a possible four-door Mustang. The idea of an extended Mustang lineup isn’t exactly a groundbreaking concept.

Ford has registered the "Mach 4" trademark, fueling rumors about a four-door Mustang. Is a new era for the iconic pony car on the horizon?

If or when the Mach 4 actually arrives, not only will it be the first production sedan Mustang ever, but it will likely be the first sedan in the Ford’s U.S. lineup in years. Dearborn has not offered one of those in this country since the Fusion departed the scene in 2020.

Ford has filed a trademark for the name ‘Mach 4’ with the United States Patent and Trademark Office, igniting rumours that a four-door version of the Mustang could be well on the way.

Ford has filed a trademark for "Mach 4" with the U.S. Patent & Trademark Office, fueling speculation that a four-door Mustang could become a reality.

Is Ford really considering rolling out a four-door Mustang? A trademark filed with the USPTO seems to hint at its arrival

The Ford Mustang Mach-E took a while to hit its stride, but more than four years after first going on sale it’s really charging. Sales of the electric crossover in the US leaped by 61.9 percent in the first two months of 2025 compared with the same period last year.

Ford recently applied to trademark the Mach 4 name. This development suggests that the rumoured 4-door Mustang sedan may be in the works. The application was filed with the United States Patent and Trademark