Both Hamilton and George Russell were confirmed as staying with the Brackley squad for the next two years earlier on Thursday, as they seek to renew Mercedes' challenges for the title after the past season and a half has yielded just one win.
The extension to 2025 will keep Hamilton at the team for a 13th season, having joined Mercedes for 2013 and embarking on a tremendous run of success that yielded six titles between 2014 and 2020.
Explaining his decision to stay, Hamilton said that he was motivated to help the team return to the front of the F1 grid and that, despite questions over his future amid a comparatively lean period for Mercedes, those doubts had been quickly diffused by the efforts that Mercedes had been making to rebuild.
"You're all stuck with me for a little bit longer," Hamilton joked. "I couldn't be happier to be extending with this team. We've had such an incredible journey together. Mercedes have supported me since I was 13, a long trip and we still have unfinished business, so we are in this together.
"We've got a lot of work to do to get ourselves back to the front, but there's no place I would rather be."
Asked if there were any doubts, Hamilton responded: "No. I definitely wanted to continue.
"I mean, I think in life there's always up and downs, like last year was a difficult year. I'm pretty sure everyone was questioning whether they wanted to continue because it's tough at the top and it's such a tough sport.
Source: Autosport