Originally, the 2021 season of the F1 it was going to be special because of a profound technical regulation change. However, the situation of the coronavirus pandemic forced to delay the modifications for the 2022 contest. Instead, the teams had to adapt the models used in 2020 to the subtle aerodynamic variations that were implemented in the attempt to reduce speed.
HR four modifications they were a triangular cutout at the edge of the floor in front of the rear wheels, one reduction in the size of the rear brake duct fins, a decrease in the height of the two inner strakes closest to the car's centerline on the diffuser and the sealing of the grooves in the ground around the bargeboards.
Additionally, each team had two Tokens (wildcards) to work more deeply in any area of the car.
THE CARS OF FORMULA 1 OF 2021
| LAUNCHING | TEAM | MODEL |
| 15 February | McLaren Racing | McLaren MCL35M-Mercedes |
| 19 February | Scuderia AlphaTauri | AlphaTauri AT02-Honda |
| 22 February | Alfa Romeo Racing | Alfa Romeo C41-Ferrari |
| 23 February | Red Bull Racing | Red Bull RB16B-Honda |
| March | Mercedes-AMG Motorsport | Mercedes-AMG F1 W12 E Performance |
| March | Alpine F1 Team | Alpine A521-Renault |
| March | Aston Martin F1 Team | Aston Martin AMR21-Mercedes |
| March | Haas F1 Team | Haas VF21-Ferrari |
| March | Williams Racing | Williams FW43B-Mercedes |
| March | Scuderia Ferrari | Ferrari SF21 |
