Sergio Perez believes Force India are "massively" exceeding expectations with the current package they have for the 2017 season.
Both Perez and team-mate Esteban Ocon have finished in the points in all three races so far this campaign, resulting in Force India being fourth in the Constructors Championship and one point clear of Williams.
But Perez thinks that their good start to the season is due to the team's ability to pounce when their rivals present an opportunity.
"I think as a team we are over-delivering massively given where the car performance is at the moment," said Perez.
"I think we are taking opportunities from others, from other people getting it wrong. I don't think the car pace, especially this weekend, has been great.
"I'm sure when I look back at the race simulations we will not be the fifth or the fourth-fastest team. So there's plenty to improve, and hopefully the next upgrade in Barcelona will move us forward.
"I think Williams and Renault are a bit ahead, Toro Rosso as well, but we were there to take any opportunity. Three consecutive races in the points has been fantastic."