Yuki Tsunoda and Lance Stroll are set to start the Mexican Grand Prix from the back of the grid, with news that both drivers have taken on several new power unit elements this weekend.
Both drivers are using a new Internal Combustion Engine, Turbocharger and MGU-H (Motor Generator Unit-Heat).
Meanwhile, Tsunoda's AlphaTauri has been fitted with a new MGU-K (Motor Generator Unit-Kinetic), while Aston Martin driver Stroll has taken on his third Control Electronics of the season.
As a result, both drivers are set to start Sunday's race in Mexico City from the back of the field.
Stroll and Tsunoda, along with Red Bull's Sergio Perez, have also taken new Exhausts, but those changes will not result in further penalties, as none of the three drivers have exceeded the eight allowed for the 2021 F1 season.
Video: Exclusive footage from the new F1 circuit in Saudi Arabia
F1 will head to Saudi Arabia for the first time in 2021, and RacingNews365.com recently paid a visit to the spectacular Jeddah Corniche Circuit.