Daniel Ricciardo didn't try to hide his frustration as he suffered yet another DNF in Mexico with Mark Webber worried about how that bodes for his future with Renault.
Red Bull boss Christian Horner believes Sebastian Vettel's 2012 title win shows that it would be wrong to rule him out of this year's World Championship battle.
Antonio Giovinazzi says he has no idea what new development driver Daniil Kvyat will be doing at Ferrari as he will continue on as the team's official reserve driver.
Having dropped Daniil Kvyat from their line-up last season, Helmut Marko insists Red Bull have no idea why his form slumped and therefore were unable to help him.
Red Bull advisor Helmut Marko believes Daniil Kvyat had more natural talent than Toro Rosso duo Brendon Hartley and Pierre Gasly, but "something happened to him mentally".