Carlos Sainz says he trusted his gut feeling telling him to sign for Williams for the 2025 season after signing a multi-year contract with them.

The Spaniard's deal ended months of speculation around his future after it was confirmed Lewis Hamilton would replace him at Ferrari.

Williams have found themselves as consistent backmarkers in recent years, but under team principal James Vowles, they look to be making strides towards becoming more competitive, helped by Sainz's arrival.

Sainz said he buys into Vowles' vision and sees it as a similar project to the one McLaren were starting when he left them in 2020.

"I've always had the feeling during all those negotiations, I always had Williams in the back of my head as I always had that good feeling with James [Vowles] and the investment group Dorilton," Sainz said.

"I've learned over the years in Formula 1 to trust in my feeling about people also. I remember when I left McLaren in 2020, I felt like the team was moving forward and was going to be successful in the future, having spent time working with Zak Brown and Andrea Stella.

"When I left McLaren, I said they might not be winning next year or the following year but this team with these people are going to be winning soon, four years later they're performing at an incredibly high level.

"I had this feeling at that time and now I have this feeling about the people and the culture in Williams, I need to trust that feeling, and this is what I committed to."

Sainz is currently fifth in the drivers' championship, while Ferrari are third in the constructors' championship, over 300 points above ninth-place Williams, who have just four points. 

After the move was made public, Vowles admitted he had first approached the 29-year-old at the end of last season, making it a top priority to sign him, something that the driver appreciated.

"It was very important, obviously he's the leader of the project, and he has the vision, and he shared that vision, and he convinced me," Sainz added.

"He did a very good job in that sense into convincing me and into sharing the vision he has and the project he has in mind with me.

"I think we are relatively similar characters in that we are both very analytical, very fair and open, and he convinced me, as simple as that."

Alex Albon has signed a new long-term deal with Williams, until the end of the 2026 season at least.

The Thai driver, whose existing contract was due to expire at the conclusion of the 2025 campaign, has put pen to paper on fresh terms with the team he joined in 2022.

After finishing seventh in last season's World Constructors' Championship standings, Williams are ninth after a slow start to 2024.

While the length of the new deal is uncertain, it will take Albon into Formula One's new regulation period, which begins in 2026, and the 28-year-old is excited by Williams' future.

"This is a long-term project that I really believe in and want to play a key role in, which is why I have signed a multi-year contract," he said.

"The journey will take time, but I am confident we are building the right team to move forward and achieve great things in the years to come.

"It has been a difficult start to the year, but since joining Williams, we have made significant progress together, and I have seen huge changes happening behind the scenes to take us back to the front of the grid."

Team principal James Vowles added: "We are delighted to secure Alex's long-term future with Williams Racing.

"He has exceptional talent, technical input and dedication to the cause and this is a huge vote of confidence in Williams and the journey back to competitiveness that we are on.

"Since joining, Alex has consistently demonstrated his ability to perform under pressure, and signing him for the long-term is a big piece of the puzzle of moving us up the grid."