"Of course the pressure is higher now," the Mexican is quoted by Speed Week, as he represented his new employer at the Geneva motor show.
"But I have no problems with it.
"Anyone who can't handle pressure should not sign for McLaren," added Perez.
According to most pundits, Perez has had a mixed first winter with the famous British team, complaining about "extreme" tyre degradation and a difficulty adjusting to the new MP4-28.
"Of course I would have liked to collect more information before going to Australia," he admitted.
"Some days it was cold and really difficult to learn about the car," said Perez.
"But I don't know anyone in the pitlane who had carefree winter testing.
"So it's the same for everyone, not a disadvantage for us."