"Of course, learning all about a brand new car – something I'll need to do with just six days of on-track testing. It's a big challenge," he agreed. "Firstly, I'll need to understand the different characteristics of the car; secondly, I'll learn how to best work with my engineers to make the car suit my personal driving style.
"It's going to be an interesting and exciting journey," he added.
Perez explained that the preparation for all this had begin months ago, starting with getting his own personal fitness to new heights.
"I'm more prepared than I've ever been for the start of a new season," he said. "I feel extremely fit, focused and refreshed – there's still a lot to do, but my aims are to feel confident, comfortable and ready to race by the time I land in Australia in just a few weeks' time."
Jenson Button also has a big change to get used to this year - a brand new team mate.
"It's always interesting and inspiring to begin working with a new face, and it already feels like a very positive working relationship," said the former world champion, who said that he empathised with Perez' feelings of being the new boy on the first day of school.
"I know from personal experience that it can feel initially daunting when you walk into the McLaren Technology Centre for the very first time, but I also remember how quickly I was made to feel at home and how welcoming I found the whole McLaren family. I'm sure Checo already feels very much at ease here."