Verdict: Mercedes stuck by Valtteri Bottas through a winless 2018, so the Finn taking two victories in the first four rounds of 2019 could well see him retained alongside his world champion team-mate once again next year.
Verdict: Vettel's struggles have prompted wild suggestions that he could leave Ferrari by the end of the year, or retire from F1 entirely. However, both the four-time world champion and team-mate Charles Leclerc are contracted for next season and are expected to remain together.
Verdict: Verstappen will remain the focal point of Red Bull for many years, the team hopes. However, doubt remains about the seat next to him, with Gasly being linked with a mid-season departure from the senior Red Bull team amid his struggle to adapt after his promotion from Toro Rosso.
Verdict: Renault have so far struggled to match the lofty target of hunting down the top three that came with the signing of Ricciardo, but he will remain next season. Renault boss Cyril Abiteboul has confirmed he is keeping his options open for the other seat, as is Hulkenberg. Last year's reneged gentleman's agreement with Mercedes over Esteban Ocon has been back in the headlines recently. Will hands be shaken again?
Verdict: Magnussen's admirable consistency in 2018 landed the Dane a two-year deal – rare currency in F1's midfield – and he continues to outshine his team-mate, despite Haas' race-pace woes. Grosjean's tendency to start campaigns slowly is hitting Haas hard in the midfield fight and his future is far from certain.
Verdict: As McLaren's revival has shown genuine signs of coming to fruition in 2019, the team became the first to confirm its 2020 line-up ahead of the British Grand Prix, with Norris and Sainz to continue the fine work they have done in the early months of their partnership.
Verdict: Lance Stroll's seat might be the safest in F1, and Perez's long-term partnership with the team through thick and thin likely gives him a leg-up in negotiations for a 2020 season that Racing Point will hope to show that the teams' backing can translate to on-track success.
Verdict: Raikkonen has adapted seamlessly into life in F1's midfield and will be back for more as a 40-year-old in 2020. Giovinazzi has shown signs of improvement after a slow start. Given Alfa are a likely landing spot for Ferrari juniors, much like Giovinazzi himself, Mick Schumacher's unspectacular, while solid, start in F2 could keep the Italian on the grid, with Mick taking on another year in the junior ranks.
Verdict: Kvyat and Albon have confounded concerns over reliability and inexperience alike for Toro Rosso this year, and both have been mentioned as potential replacements for Gasly if his poor form goes on. If the junior team do lose a driver, last year's scrabble for replacements could be seen again, with Dan Ticktum recently booted from the junior programme. Mexican Patricio O'Ward has replaced the Brit, however, and has set his sights on F1.
Verdict: Although Williams have been abysmal so far, Russell has shown glimpses of his skill and consistency, especially in his vast outperformance of Kubica. The Pole's fairytale return to F1 has soured a little as performances have been so bad. His future is up in the air.
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