We have received reports from players that the challenges related to the Fast-track feature are not tracking progress. Please note that if you use Coins instead of watching an advert to reduce a box's research time, then, these challenges will correctly track progress.

We are planning to bring some modifications to the "Fast track-type" challenges in a future update so there's no confusion anymore on how to complete these challenges.

We hope this helps and we thank you for playing F1® Mobile Racing!