Ford Mustang GT3, GT4, Dark Horse R Racers Selling Insanely Fast

The Ford Mustang Dark Horse marked a bold new chapter in The Blue Oval’s motorsports endeavors. The pony car inspired a fleet of track-ready race cars, including the Mustang GT3, Mustang GT4, and Mustang Dark Horse R, and with a season of stellar results already under its belt, the pony racer is more popular than ever – so popular, in fact, that Ford is having a hard time keeping up with demand.

Ford Performance head Mark Rushbrook spoke to the Mustang racers’ popularity in a recent report from Racer. Even before the green flag fell on the 2025 racing season, demand for the Ford Mustang GT3 in particular skyrocketed, making the race car one of the most coveted machines on the sportscar racing circuit.

“We’re building GT3s, GT4s and Dark Horse Rs as fast as we can – we can’t build them fast enough for teams and drivers,” Rushbrook told Racer.

The popularity of the Ford Mustang GT3, GT4, and Dark Horse R exploded after the No. 65 Mustang GT3 cruised to the GTD Pro division win in the 2025 Rolex 24. The victory threw a spotlight on The Blue Oval’s Mustang race car, making it even more attractive to prospective buyers.

“We’ve had a lot of interest since we first announced the cars and started building them, and a win like Daytona only adds eyeballs and interest,” Rushbrook said. “My phone lights up with any race win, but after that win, it was one the biggest light-ups I’ve ever had.”

Now that the Ford Mustang GT3 has been around for one full season, Ford has taken lessons learned since its maiden races and applied them toward improving the race car’s performance. Ford initially struggled with things like torque sensor issues, which created a power disparity among the Ford racers. Another issue saw parts physically falling off the race cars at inopportune moments, forcing The Blue Oval to reevaluate its program. The new approach paid off and things finally started going the Mustangs’ way late in the 2024 season.