The cabin is equally an expression of the car's performance focus, with front sports seats designed specifically for the car by Toyota Boshoku, providing best-in-class body holding and support. The authentic performance details include an engine start button and a small-diameter, leather-wrapped steering wheel, sourced from the Toyota GT86 coupe and further adapted to suit the special requirements of the Yaris GRMN. There is also an aluminium sports pedal set, aluminium trim detailing and a bespoke, high-grade combimeter with TFT display, designed to reflect the car's special performance character.