The Focus RS RX is built on the Focus RS, with a tuned 2.0L (1,983 cc) turbocharged inline-4 engine, with power output rated at 600 hp (447 kW) and torque output rated at 664 ft·lb (900 N·m).
Equipped with a six-speed manual transmission and weighing less than 2500 lb (1134 kg), the Focus RS RX is capable of doing 0-60 mph (97 km/h) in less than 2 seconds, faster than even the Porsche 918 Spyder and Dodge Challenger SRT Demon (regardless of whether or not rollout comes into play).
The Ford Focus RS RX is a rallycross car and, as such, is made for offroad racing. It has an extremely fast 0-60 mph (97 km/h) acceleration time of 1.9 seconds, which outclasses even hypercars like the Porsche 918 Spyder, Ultima Evolution Coupe 1020, and Bugatti Veyron Super Sport; this is a trait typical of rallycross cars primarily due to their AWD drivetrains and the need to get a great start off the line especially on dirt tracks. The Focus RS RX's astounding acceleration is also evident in its 5-second run to 100 mph (161 km/h). The only car that has a faster acceleration to 60 mph (97 km/h) is the Hoonigan Ford "Hoonicorn" Mustang, with 1.8 seconds.
The Focus RS RX handles and brakes really well, especially off-road. Despite these handy performance advantages, the Focus RS RX is best used for tracks with a lack of long straights, as its top speed is rather low at 144 mph (232 km/h) and its overall gearing is very short, a trait typical of rallycross cars.