The start of any Formula One season is a game of smoke and mirrors: this one, which gets underway in Melbourne on Sunday, has the added intrigue of sweeping changes that could shake up the established order.

For all the preseason testing, the finger-pointing, the accusations of 'sandbagging' and loopholes in the new regulations, the guessing games have left us nowhere closer to predicting how the 24-race 2026 season will pan out.

Beyond the obvious, of course: the champion will come from one of four teams, the usual suspects of McLaren, Mercedes, Red Bull and Ferrari.

And that is no disrespect to the other seven teams, including newcomers Cadillac and Audi.

The major chassis and power unit overhaul, designed to create more overtaking opportunities and improve the sport's eco-sustainability, have dominated the preseason testing.

So the smoke will only begin to lift on the true force of each car when they take to the track at Albert Park.

Only then will we get an idea of whether McLaren's Lando Norris will be in pole position to retain the world title he won so dramatically from Max Verstappen last season.

The pit lane talk has been hanging the "favorite" tag around the neck of George Russell, as Mercedes is rumored to have made the best of the rule changes.

That may depend, however, on whether it has indeed exploited a loophole in the new rules, as many are claiming, which could give its cars as much as 0.3 seconds per lap over their rivals.

In a sport of fine margins, that is a gaping chasm.

When Verstappen grumbled publicly about the new cars in Bahrain, describing them as "Formula E on steroids" and "anti-racing", Russell leapt to their defense.

"The guiding principles are still very much the same," said the Briton.

"You're pushing the car to the absolute limit.

"You're trying to brake as hard as possible and as late as possible, and carry as much speed through the corners."

'Reliable' Red Bull

The Russell-Verstappen dynamic is certainly one to watch.

The pair have had a number of spats going back to the Azerbaijan sprint in 2022. It picked up in 2024 with Russell accusing Verstappen of being a bully, and the Dutchman describing Russell as a "backstabber".

For these last four years, the Mercedes was not a match on track for Verstappen's Red Bull, but if that changes this year then the rivalry could reignite.

Questions remain about the efficiency and reliability of the new Red Bull engine, which is the first that the team has developed and built itself, with some input from Ford.

Having said that, the four-time world champion's father Jos Verstappen, who is not renowned for holding back, called it "promising".

"I am satisfied with what is happening, especially when we look at the engine," he said.

"It is powerful and reliable. During the first race, we will see where it really stands."

Russell and Max Verstappen will also face stiff competition from their young teammates, 19-year-old Kimi Antonelli and 21-year-old Isack Hadjar.

"If the car is capable of winning, then I will win races," the ambitious Hadjar, promoted from the Racing Bulls team, told reporters.

If the Mercedes engine has capitalized on a loophole, which will be closed mid-season, then it should also assist Norris and his teammate Oscar Piastri, whose McLarens use the same power units.

"The biggest challenge at the minute is battery management and knowing how to utilize that in the best way," said Norris.

"You have a very powerful battery that doesn't last very long, so (it's) knowing when to use it, how much energy and power you use, and how to split that across the lap."

Ferrari is the last of the Big Four, and, after some pretty lean years, it will be looking to Charles Leclerc and Lewis Hamilton to do more than make up the numbers.

Hamilton is 41 now and suffered a miserable debut season with the Italians last year when he failed to make a single Grand Prix podium.

His body language suggested he might be on the verge of quitting, but the new regulations appear to have given him refreshed energy to chase that record eighth world championship title once more.

"I'm reset and refreshed," he posted on social media after preseason testing.

"I'm not going anywhere, so stick with me. For a moment, I forgot who I was, but... you're not going to see that mindset again.

"I know what needs to be done. This is going to be one hell of a season."