With proceedings beginning on Tuesday, Kamui Kobayashi will be in the car and remain for Wednesday, before Sergio Perez steps in for a single day on Thursday.
The action will take place between 9am and 6pm (BST +2) on the three days, with an hour-long lunch break meaning the red light comes on at one o’clock.
Sauber’s Mugello test line-up is as follows:
Tuesday: Kamui Kobayashi
Wednesday: Kamui Kobayashi
Thursday: Sergio Perez