The American, who is about to embark on his second season for Williams, made the move from F2 to F1 ahead of his rookie campaign for the Grove-based squad last year.
And he believes that, while there were aspects of F2 that helped put him in good stead for the top tier, there were a lot of elements that proved to be quite hard to adapt to.
The Dallara-built F2 2018 chassis will now be replaced by a new car for 2024 that brings the support series more in line with F1's current ground effects cars.
Speaking to Autosport about the transition from F2, he said: “F2 is a great series that has great drivers, but I think the gap between the cars is probably a bit too big for what it should be.
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“There are just so many more fine details in F1, and there's just so many more things that add into performance than just getting in the car and driving like you do in F2.”
Sargeant believes that one of the biggest differences between the series is car complexity, with F1 in particular having many more detailed control elements that are critical to performance.
It tallies with comments made by F2 graduate Liam Lawson, who spent last season racing in Japan's Super Formula championship before making his F1 debut in place of the injured Daniel Ricciardo at AlphaTauri.
“There are so many things that you can do from a driving aspect that you can't do enough to in an F2 car,” Sargeant explained.
Source: Autosport