After acquiring the Mini RX project from Prodrive, the Mini RX Supercar is JRM Racing's result of development after their decision of launching a long-term commitment to the FIA World Rallycross Championship in 2015. Based on the Mini John Cooper Works Rally Car, it boasts a 1.6-litre BMW turbo engine which produces around 480bhp, lightweight bodywork and other performance enhancements in order to comply FIA's Supercar technical regulations. Later in 2016, the Mini RX received a 2-litre engine upgrade.
The Mini Countryman Rallycross is a Rallycross Supercar featured in DiRT Rally, it was added to the game through the World RX Multiplayer update. Due to the 1.6-litre engine, it might get out-accelerated by other Supercars on long straightaways. Despite lower speed it possesses excellent handling which makes it tackling corners easier and it is the lightest Supercar in the game.