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?

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 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

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.

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

A four-door Mustang coupe appears to be closer than ever to becoming a reality, because as of Tuesday, as Ford has officially filed to trademark the name “Mach 4” for a motor vehicle.

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 submitted a trademark application for the term 'Mach 4,' which has now gotten the internet buzzing on its meaning. Some believe that Ford could be planning some kind of Mustang four-door,

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.