Since 2021, Mercedes have struggled to find the perfect balance. In 2022, they had their struggles with 'porpoising' and bouncing. In 2023, they had their failed experiment with the 'sidepodless' W14, meaning they had to revert to their old sidepods and start from square one. That put them on the back foot for 2024, and they have been wildly inconsistent. However, when the tricky W15 is on form, it can challenge the front of the grid. Technical director James Allison has spoken about the new upgrades brought to Imola this weekend in the hope of improving the W15.