So what can Force India, with one of the smallest budgets on the grid, do next?
F1 business journalist Christian Sylt wrote in the Express newspaper that owner Vijay Mallya is "negotiating and discussing" a new naming rights deal with Aston Martin, the iconic luxury British carmaker.
And Perez says the team wants to keep getting better.
"This is a huge task for a small team like us, to take on teams like Williams and Red Bull. I also expect more from some of our other opponents next season. McLaren, for example, and Toro Rosso, and we also must not underestimate Haas," he said.
"This (Haas) is not really a new team. With their connection to Ferrari, they will be a challenger from the beginning," said Perez.