Sergio Perez feels he is in the form of his life currently as he looks to charge into the end of the 2015 Formula 1 championship on a high.

Since taking delivery of the B-specification Force India car at Silverstone the Mexican driver has secured seven points finishes in nine races including three impressive top-five finishes and a crowning highlight of a podium finish in Russia.

Arguably the most consistent driver over the course of the second half of the season, Perez has risen to ninth in the F1 Drivers' championship and his eighth place finish at his home race guaranteed the Mexican his best year in the sport.

"In the last few races we've had a really good run of results," Perez said. "I feel I'm driving at my best and the team is doing a fantastic job. We want to finish this season on a high and I think we still have some big results in us, so I am confident ahead of the race."

The Brazilian Grand Prix has proven to be a difficult event for Perez, with only one points finish in four races, coming with McLaren in 2013. The Force India driver says he enjoys the test of the Interlagos circuit and will be hunting an improvement in results this weekend.

"Brazil is another venue where you can feel the energy of the fans," he said. "The track is brilliant: it's a proper racer's circuit with some amazing corners. The first sector is fantastic: you can take different lines through turn one and you can end up in a battle for position that lasts until turn six.

"The lap is very technical and there are a lot of places where you can easily make a mistake, but the feeling when you get a perfect lap together is amazing."