Cape Town - Tuesday's test at the Yas Marina circuit will give F1 fans a first look at the 2019 grid as Kimi Raikkonen is in action for Sauber, Charles Leclerc for Ferrari and Pierre Gasly tests for Red Bull.
Only two teams, Mercedes and Haas, have retained their 2018 line-up for next season with Sauber, McLaren, Toro Rosso and Williams all sporting completely new line-ups.
And several of those drivers will be in action at the Yas Marina circuit on Tuesday as Pirelli test their new-for-2019 tyres.
Lando Norris will run the McLaren MCL33 on Tuesday while Lance Stroll, still to be officially confirmed by Force India, is testing the VJM11.
They'll be joined out on track by the Williams pairing of George Russell and Robert Kubica.
Mercedes - TBC
Ferrari - Charles Leclerc
Red Bull - Pierre Gasly
Renault - Nico Hulkenberg
Haas - Pietro Fittipaldi
McLaren - Lando Norris
Force India - Sergio Perez/Lance Stroll
Sauber - Kimi Raikkonen
Toro Rosso - Seal Gelael
Williams - George Russell/Robert Kubica