Red Bull's route to preparing for 2016 was fraught with indecision over its power unit.
It is invariably a team that leaves a new car's completion until the last minute anyway, so expect the RB12 to change a great deal over the two weeks of testing.
The car has shown some of its secrets so far, but there is also evidence that Red Bull is holding its final specification back to maximise development time and exploit all possible gains in the windtunnel.
OPINION: Uncertainty over Lewis Hamilton's future has persisted since the race direction call that denied him an eighth world title in Abu Dhabi last month. But while walking away would be understandable, Hamilton has time and again responded well in the face of adversity and possesses all the tools needed to bounce back stronger than ever
OPINION: The first stage of the 2022 Formula 1 pre-season is just over a month away, but the championship is still reeling from the controversial results of last year’s finale. The FIA acknowledges F1 has had its reputation dented as a result, so here’s how it could go about putting things right
As Formula 1 prepares to begin a new era of technical regulations in 2022, Autosport picks out six other key elements to follow this season
After 349 grand prix starts, 46 fastest laps, 21 wins and one world championship, Kimi Raikkonen has finally called time on his F1 career. In an exclusive interview with Autosport on the eve of his final race, he explains his loathing of paddock politics and reflects on how motorsport has changed over the past two decades
Formula 1 cars will look very different this year as the long-awaited fresh rules finally arrive with the stated aim of improving its quality of racing. Autosport breaks down what the return of 'ground effect' aerodynamics - and a flurry of other changes besides - means for the teams, and what fans can expect
OPINION: The 2022 Formula 1 season is just weeks away from getting underway. But instead of focusing on what is to come, the attention still remains on what has been – not least the Abu Dhabi title decider controversy. That, plus other key talking points, must be resolved to allow the series to warmly welcome in its new era
Mick Schumacher’s knack of improving during his second season in a championship was a trademark of his junior formula career, so his progress during his rookie Formula 1 campaign with Haas was encouraging. His target now will be to turn that improvement into results as the team hopes to reap the rewards of sacrificing development in 2021
As the driver of Formula 1’s medical car, Alan van der Merwe’s job is to wait – and hope his skills aren’t needed. JAMES NEWBOLD hears from F1’s lesser-known stalwarts
Pirelli's new ultra-soft a 'good step' reckons Red Bull's Ricciardo
Why Honda progress isn't enough