P4 is the lastest Picchio racing car for Hill Climb Competition. The main innoavtions of this race car are:
- safety: crash box for each side of the car
- aerodynamics: front bodywork optimized to increase downforce, rear triplane and an high efficient rear diffuser
- engine: four-cylinder TURBO engine developed by Picchio
- bodyshell: carbon fibre
Christian Marli is the driver, Tschager Motorsport the official team