[3] In August 2019, in between the Hungarian and Belgian Grands Prix, it was announced that Albon would be promoted to Red Bull Racing for the remainder of the season, while Pierre Gasly would return to Toro Rosso, due to the poor performance of the Frenchman at the senior team Red Bull Racing.

[7] This was the last car to be designed by the outgoing Technical Director of the team, James Key, ahead of his departure to McLaren.

[9] It had its shakedown completed at the Misano World Circuit Marco Simoncelli, with Daniil Kvyat, and Alexander Albon at the wheel, ahead of pre-season testing, on 13 February 2019.

[10] The online launch specifications appeared to be for a greatly simplified version of the previous year's car, most notably at its front.

The nose appeared to be the 2018 specification carried from its predecessor due to several cues, such as the thumb tip, louvered mounting pylons and the S-Duct.

When Albon joined the team, he brought the Thai oil and gas company PTT until for the few remaining races.