Williams admits development rate is not enough to move up the F1 grid

Williams launches two-week upgrade review

Williams team principal James Vowles has admitted that the team’s current rate of car development is not sufficient to deliver its ambition of moving further up the Formula 1 order.

The comments come amid wider scrutiny of Williams’ Silverstone showing, including Carlos Sainz’s concerns over the team’s British Grand Prix pace. For Vowles, however, the focus is now on understanding the evidence behind the latest development cycle rather than reacting to a single event.

“I would say right now what’s clear is our rate of bringing performance to the car – which is a little bit nuanced in how I mean that – is not at the rate required in order for us to move forward,” he explained during the latest episode of The Vowles Verdict.

Silverstone data to shape the next phase

Williams will use the gap between the British Grand Prix and the Belgian Grand Prix to examine not only the Silverstone package, but its development work across the entire season. The Belgian round is scheduled for 17–19 July at Spa-Francorchamps.

“Step one of all of that is to make sure that we take time to fully understand not just what we’ve done in Silverstone, but really what we’ve done across the entire season,” Vowles said.

He added that every upgrade contains evidence of what worked and what did not. The speed of the review, expected to take place over the next two weeks, will influence Williams’ decisions for Spa, Budapest, the remainder of the season and its preparations for next year.

Learning under pressure

Vowles described the process as normal for a Formula 1 team bringing new performance to the car, where results can differ from expectations and failures provide important lessons. He said Williams must continue learning from its own data because no other team can provide it with answers about developments it has not previously tested.

The team principal also identified Williams’ culture as a positive: “What I’m pleased with is that we have a very good culture of openness, learning and turnaround speed. And that, for me, is what defines a team.”

Williams currently sits eighth in the constructors’ championship with 11 points after nine rounds of the 2026 season.