Sergio Perez admits that Force India will not be bringing any significant updates to its car until its home race at Silverstone, and that he’s expecting a difficult weekend in Barcelona.
Force India finds itself down in eighth in the constructors' standings after the first four races, a seventh place for Nico Hulkenberg in the season opener in Melbourne the team's best result so far in 2015.
After taking a creditable eighth place last time out at Bahrain, Perez believes that the Silverstone-based outfit will essentially be in damage limitation mode until its new update package arrives in time for the British Grand Prix in July.
"It's difficult when we have are no upgrades and other teams have them," said the Mexican, "so we'll just have to see where we are.
"We're still learning about the car and we're pushing hard at the factory to bring the package together, but Silverstone will be the first time when we have it."
Perez added that the prospects of repeating his result from Bahrain are bleak unless several of his rivals encounter problems.
"In Barcelona you need a lot of downforce, and that's what we're lacking the most," he admitted.
"To score around this place, we'll definitely need other cars to have trouble. Bahrain was different because of the way the track layout suits our car; this will be a tougher weekend."