As commonly seen during these tests, the Williams team has also additional some sensors to verify its simulations. Just like at more than a few Friday practices, torsion sensors are fitted to the drive shafts, while a large sensor box was supplementary on each outer side of the rear wing endplates.
Interestingly, the teams have also quite considerably modified the sidepod covers. A slight bulge now features on the upper side of the sidepod to make room for the upward fatigue. The hot air outlet of the sidepods has also been reshaped, now allowing air to exit low above the diffuser, a design similar to the FW33 early on the in period, before Williams changed to a more Red Bull comparable configuration. Considering the inner direction of the fatigue outlets, the change makes sense as it allows for a cleaner exhaust flow onto the central part of the rear wing.