Oscar Piastri explains 'chaos' theory as F1 faces 'pretty extraordinary' Italian GP

Oscar Piastri has predicted a potentially "chaotic" and "pretty extraordinary" Italian Grand Prix, with Formula 1's new-for-2026 energy management challenges set to come sharply back into focus at Monza.

As is well-trodden ground, the revised power unit regulations have made energy recovery and deployment a defining consideration this year.

With the MGU-H removed and the electrical contribution of the hybrid system significantly increased, teams are far more reliant on recovering sufficient energy through braking, partial throttle, lift-off regeneration and super clipping.

That creates particular problems at energy-starved circuits, where cars spend long periods at full throttle but have relatively limited opportunities to harvest energy.

Like Silverstone, Monza is an extreme example of this. The difficulty is a fundamental one: giving teams more energy to recover encourages excessive harvesting and super clipping, while reducing the allowance limits the energy available to deploy on the straights, thus hindering top speeds.

The FIA moved to address that balance with a mid-season revision to the regulations, reducing the standard qualifying recharge threshold and expanding the number of events at which alternative limits can be used. The changes were aimed at reducing excessive harvesting and making qualifying more consistently flat-out, with the FIA targeting significantly shorter periods of super clipping.

Monza will be at the extreme end of that scale, with a 5MJ qualifying limit and 7MJ in the race. The 5MJ figure is the lowest qualifying allowance currently forecast for any circuit, reflecting just how difficult it is to replenish the battery around the Temple of Speed.

Piastri believes the governing body's intervention has chosen the preferable of two difficult options, even if the revised regulations will continue to create complications.

"You just don't really have much energy to use," the McLaren driver told media, including RacingNews365. "At a circuit like this, you've got a problem no matter which direction you go.

"If the harvest limit was higher, we would be super clipping everywhere and probably losing 30 or 40 kph at the end of each straight.

"But they've dropped the harvest limit, which means super clipping is a normal-ish amount or, let's say, a reasonable amount.

"It's still there, but also you then don't have as much energy to spend on the straights, so the actual top speed is quite low. So we'll wait and see what top speeds we get.

"In our sim running, I think we were actually quicker on the front straight in Hungary than we were here, which, yeah, doesn't make a whole lot of sense, but it's more that we just don't have the energy to spend.

"But again, if you gave us the energy to spend, we then don't have anywhere to harvest it. So you run into a problem no matter which way you go. And for me, I think this is the correct direction to go in and have a sensible amount of super clipping."

Why the Italian Grand Prix could be 'pretty extraordinary'

The consequences could be particularly significant in the grand prix itself. The new regulations give teams and drivers more strategic choices over when electrical energy is deployed, while the Overtake Mode can also alter how long a pursuing car can sustain its performance advantage.

That could produce unusual differences in straight-line performance and overtaking opportunities, particularly as drivers begin the race with varying energy strategies.

While Piastri was less certain over the impact on one-lap pace, he expects the opening stages of Sunday's race to provide a striking demonstration of the challenges facing F1's new generation of machinery.

"Qualifying, I'm not sure how much it will impact things," the nine-time grand prix winner added. "We'll find out probably a bit more through Friday.

"I think the race is going to be chaos, especially at the beginning. It's obviously a track that's very, very energy-starved and a lot of different straights where you can use your energy. So the racing could be pretty extraordinary.

"Let's see what we get. We've got a lot of track time until then, so we'll see what kind of deployment everybody has, and where it all pans out.

"But I'm expecting it to be pretty chaotic, [or] exciting. Pick or choose which perspective you want on that, but it's going to be eventful one way or another."