Seb saying what I mentioned and thought about the C3 previously. They now know how to fix issues and make the car better in one area, but then other problems arise and it effects other parts of the c3 "which is already a tricky car".

It seems they've hit a wall in testing after working on things, and can't improve as things stand. The car is fundamentally flawed and it goes back to Matton and his management, and the risks the technical guys admittedly took in development and design. No driver can get totally on top of the car fully, not even the great Ogier.