Jules Bianchi believes that he has settled in well at Force India after his first day on track with the team at Jerez.
The Ferrari-contracted Frenchman, who will drive in at least nine Friday practice sessions this year, completed 46 laps in the new Force India VJM05 before handing over to Paul di Resta in the afternoon.
"I got used to the team and a new way of working," said Bianchi. "It has been a really important day for me. It's the first day in the car and a really nice sensation.
"The car felt pretty good. We still need some time to get on the limit because we are not pushing very hard at the moment. We are trying to find the set-ups and how the car behaves."
It is the first time that the GP2 race-winner has driven an F1 car other than a Ferrari, which he did most recently during last year's young driver test in Abu Dhabi.
He didn't find it difficult to adapt to his new environment.
"It has been a surprise to me. The car felt really amazing to drive so I am really happy.
"I will take it step by step and try not to pus too much. I just want to do what the team is asking me."
Bianchi added that he does not feel under any extra pressure to deliver despite the fact that Force India's previous two reserve drivers have been promoted into race seats.
"It's pressure, but this is part of the job," he said. "I'm used to pressure as I'm been under pressure in all of my seasons in motor racing. I just have to do my job."