Perez happy with McLaren start
Sergio Perez savoured "an incredible day" as he made his track debut for McLaren in a car he can already tell has race-winning potential.
Although only seventh quickest at the Circuito de Jerez, Perez enjoyed a steady introduction to his new car after two seasons with Sauber.
Perez had his moments with the Swiss-based team, notably last season when he finished runner-up twice in Malaysia and Italy.
But primarily the Sauber was a midfield runner, so to get behind the wheel of a car that could land him a maiden victory was an obvious thrill.
There remain a few kinks to iron out, such as being more comfortable in his race seat, but aside from that the 23-year-old Mexican could not be happier.
"It was a day in my new office which was much more different than I was expecting," said Perez.
"By sitting in a different seat you have to adapt yourself to a new position, a different way of holding the steering wheel. Pretty much everything is different. It's like starting from zero.
"But we are going in the right direction, and I'm more happy than I was expecting.
"I still need to sort out some things with my seat, with my cockpit, to be a little bit more comfortable, but even then we still managed an incredible day."
Despite making it clear he wants to win the world title this year, Perez would not suggest whether the car can deliver on such an ambition.
Instead, he simply added: "On the first few laps out of the garage I knew this car has good potential. I could feel it.
"We don't know how competitive we are, so all I can say is the car feels quite good.
"We've a lot of work to do over the next five days (of his time in the car in the tests), so we have to keep our heads down and hopefully we will be in good shape for the start of the season.
"But definitely the mechanical grip on the car is good, as is the aero. It's a very complete car. I'm very happy with it."