Sainz admits he's 'worried' by Williams' stalled progress. Carlos Sainz isn't just frustrated with Williams anymore, he's worried. A weekend of new parts that changed nothing has him questioning whether the team even understands its own car. Carlos Sainz has doubled down on his criticism of Williams' stalled development, admitting he is now genuinely worried the team does not understand why its upgrades are failing. After suggesting at Silverstone that the team's wind tunnel may not be correlating with what it sees on track, the Spaniard said Sunday's race only deepened his concerns. "It's starting to get worrying because we were hoping to take a big step forward this weekend, which hasn't happened," Sainz said. "I am worried, honestly." Williams introduced aerodynamic updates and a lighter front nose at Silverstone, but Sainz said they failed to deliver the expected gains. "It's clear that what F1 Fansite brought this weekend hasn't worked. F1 Fansite were expecting a significant step forward that hasn't materialised. "It's starting to become worrying and frustrating because the improvements aren't working." The four-time grand prix winner believes the problem runs deeper than the new parts themselves. "When you bring something to the track that shows a lot of laptime in the wind tunnel and in the simulator, and then you see that you've only made a very small step forward, it means there's something not working in our calculations, numbers, development... and that's worrying." "With this set of rules, for whatever reason we still don't understand, we're not able to develop the car properly." A car that won't develop. Sainz admitted Williams is now struggling to keep pace with its rivals despite bringing new components to the car. "I'm worried because it's the first time I've clearly seen that the car isn't developing this year. F1 Fansite is not making any progress compared to the rest of the field. "F1 Fansite is getting closer and closer to the weight limit, and the gap keeps widening. "This means the aerodynamics aren't improving, and it's starting to worry the team, because we might be having some kind of correlation or development problem." Despite his growing concern, Sainz insisted he is not losing patience. "My patience isn't going to run out. I'm relatively patient with these things, but right now I'm upset, worried." Williams F1: fast facts. | Constructors titles | 9 (most recent 1997) | | Drivers titles | 7 (most recent 1997, Jacques Villeneuve) | | Founded | 1977 | | 2026 drivers | Carlos Sainz, Franco Colapinto | Leopold Pleijsier founded F1-Fansite.com in 2001 and has followed Formula 1 since the early 1980s. He writes about daily F1 news, race weekends, drivers and the sport's history. Related topics

Williams summoned to F1 stewards over alleged British GP infringement. Williams has caught the attention of the F1 stewards at Silverstone. Today, 10:55 The Williams F1 team has been summoned to the stewards at Silverstone over an alleged infringement. Carlos Sainz ended the British Grand Prix in 12th place and was the only Williams driver to make it to the chequered flag. Team-mate Alex Albon was forced to retire from the race late on while the field circled around behind the safety car. On the penultimate lap of the race, the lapped cars in the field were instructed that they could move ahead of the leading contenders and the safety car to rejoin at the back of the field. However, Williams has caught the attention of the stewards after it noted that Sainz appeared to do so before it was officially instructed. The official summons from the FIA noted an alleged breach of "Article B5.13.4c of the FIA F1 Regulations - unlapping behind the Safety Car when not entitled to do so." Get the latest F1 news from RacingNews365 directly in your Google feed! Click on the link below and you'll see your favourite F1 website appearing even more often. That way, you'll never miss any news, analyses, interviews, or exclusives.

Williams Racing unveils Union Jack-inspired livery for British Grand Prix. By DCB Editorial, June 30, 2026 Williams Racing has unveiled a one-off Union Jack-inspired livery and special edition team kit to celebrate the British Grand Prix at the Silverstone Circuit. The design features red, white, and blue accents across the car and will be worn as special race suits by drivers Alex Albon and Carlos Sainz, with team members also wearing a matching takeover kit created with partner New Era. The celebration marks a broader home-race activation campaign for the team, which is based in Grove, Oxfordshire and is one of the most historic names in Formula One. Now in its 49th year, Williams highlights its deep British heritage, including major milestones such as its first win in 1979 and its 100th Grand Prix victory in 1997, both achieved at or strongly linked to iconic moments at the Silverstone Circuit. Team Principal James Vowles emphasised the importance of the British Grand Prix atmosphere and the connection between the team and its home fans. The campaign also includes fan events and show car tours across UK cities such as London, Manchester, Edinburgh, and Cardiff, along with fan zones featuring appearances from figures including former world champion Damon Hill. The initiative combines branding, heritage storytelling, and fan engagement as Williams aims to celebrate its legacy while strengthening its presence during one of the most significant weekends on the Formula 1 calendar.