Ferrari's got their heads down during the summer shutdown, and they're not actually shutting down at all. The Scuderia is running intensive testing sessions on their upcoming engine upgrade destined for Monza, with no intention of letting reliability concerns slip through the cracks. Power unit technical director Enrico Gualtieri is overseeing bench tests to make absolutely sure their new turbocharger design doesn't cause headaches when Lewis Hamilton and Charles Leclerc need it most in the Italian Grand Prix.

More F1 news: Nine Current F1 Drivers Were at Sepang in 2017, But Most Weren't Even Born Yet

The upgrade is no small thing either. Ferrari's bringing a revised turbo to Monza that they reckon will meaningfully cut into Mercedes' power advantage. With Andrea Kimi Antonelli currently 50 points clear of Hamilton in the championship and Leclerc sitting fourth, nearly 81 points behind the Mercedes kid, the Scuderia knows these next two races are absolutely crucial. They'll introduce some general tweaks at Zandvoort first, then unleash the proper upgraded engine at home.

More F1 news: Vasseur Stands Firm: Ferrari Won't Abandon Its Upgrade Strategy Despite McLaren's Success

Here's the catch though: Hamilton and Leclerc are already walking a tightrope with their power unit allocations. Both drivers have maxed out their internal combustion engines and turbos at three uses each. They can squeeze in one more of each before grid penalties start raining down. Ferrari's learned from past mistakes and they're adamant that increased performance won't come at the cost of reliability. Missing races or taking penalties would absolutely torpedo their title hopes, and they're not about to let an upgrade backfire.

More F1 news: Rachel Brookes' Wild 2027 Driver Shuffle: Russell to McLaren, Verstappen to Mercedes, Piastri to Red Bull

The reliability advantage Ferrari's enjoyed this season is genuinely massive, so they're treating this new engine like a precious thing. Every bench test, every simulation is designed to prove the upgrade won't compromise the power unit's durability. If it does, Hamilton and Leclerc would be forced to take older, less powerful engines just to avoid penalties. That's simply not an option when they're fighting for a championship.

Shop the collection: Charles Leclerc merch  •  Lewis Hamilton merch  •  Kimi Antonelli merch  •  Scuderia Ferrari merch  •  Mercedes-AMG merch