Sergio Perez admits it is frustrating waiting for Force India's B-spec car while the current car is struggling to challenge for points.
Force India's 2015 car only hit the track midway through the final pre-season test this year and has so far proved to be some way off the pace. At the Austrian Grand Prix the team will bring a revised B-spec car which it hopes will unlock a significant amount of performance, but Perez is bracing himself for a frustrating five races until that point.
"It is really frustrating not being able to have a competitive car that can bring you into the points with pure pace," he said. "That makes things really hard. But it doesn't really change anything as the driver, you have to give your best possible shot weekend after weekend.
"Obviously you are in a position where it is very easy to lose the car as the car is very difficult with degradation. From now on we are going to have hard races, but it is what it is at the moment."
Force India is currently fighting McLaren for positions at the back of the field, but Perez is expecting his old team to move ahead in the coming races.
"At the moment the main deficit for McLaren is still the engine, which I think they can improve quite quickly. It's difficult to know because in Malaysia they did a big improvement compared to where they were in Melbourne, but for us it doesn't really change anything. Hopefully with our changes and improvement we can move forward and maybe this circuit can suit us better."