The initial focus of Formula 1's radical new era was always going to be about the engines.
With new 1.6-litre turbo regulations arriving to shake up the sport and kick it towards a more relevant future, work done by Renault, Ferrari and Mercedes was quite rightly going to have the biggest impact on the outcome of the championship.
But as the races have developed, and the strengths/weaknesses of the car packages have been exposed, there's an intriguing new battleground opening up in F1: fuel.
Why Bottas won't emulate Rosberg to beat Hamilton Of the four seasons Valtteri Bottas has been Lewis Hamilton's team-mate at Mercedes, he has been beaten in all of them. Although trying to emulate predecessor Nico Rosberg's approach is not an option, the Finn says he needs to try something new F1
The ethos change behind Williams' bid to move forward Williams was, under its family ownership, resolute in its desire to build everything it could for its Formula 1 car. Under new ownership, the team has switched to Mercedes gearboxes and hydraulics in a more pragmatic approach befitting of its status F1
Why Albon's F1 dream isn't all over Going up against Max Verstappen in the same car is not an easy task and Alex Albon's attempts to live with his highly-rated team-mate were not enough to keep his Red Bull seat for 2021. But, he's now in the perfect place to get his F1 career back on track F1
How Red Bull fell short of challenging for the 2020 title This was supposed to be the Formula 1 season when Red Bull gave Mercedes a run for its money. Instead, the next-best team fell short - until the final race of 2020 in Abu Dhabi F1
The "warrior" MotoGP rookie KTM was right to back The 2020 MotoGP campaign featured a standout pair of rookies, but one flew under the radar as he adjusted to a shock step-up armed with very little racing experience. However as his veteran team boss explains, the faith shown in him was not misplaced MotoGP
The key mistakes behind a lost Williams title Formula 1 history is full of should'ves, could'ves and would'ves, but it's easy to see 1991 as the greatest missed opportunity in the illustrious history of Williams, allowing Ayrton Senna to steal his last and perhaps greatest world championship title F1
The winless drivers who could be Hamilton's heirs to the F1 crown Eventually, Lewis Hamilton's Formula 1 career will come to a close. Although the likes of Charles Leclerc and Max Verstappen have challenged, three drivers who are yet to score a victory could inherit the world champion's place at the pinnacle F1
When F1's crazy horse joined the Prancing Horse Jean Alesi made an immediate impact in Formula 1 when he arrived with Tyrrell, but his decision to join Ferrari instead of a resurgent Williams for 1991 was ill-judged as the Scuderia became engulfed with in-fighting that resulted from a sub-standard car F1
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