Romain Grosjean says Haas must solve the problems that are affecting its front wing after the Formula 1 team suffered its fourth failure of the season in Canada.
The Frenchman pitted for the third time on lap 46 to get a new front wing and ultimately finished 14th, one place behind teammate Esteban Gutierrez.
The failure comes after similar ones were sustained in pre-season testing and the Bahrain and Spanish GPs, with the latter being traced back to a manufacturing error rather than a design flaw.
“We lost the front wing which is a bit annoying,” said Grosjean. “It’s the fourth time this year. “There was a touch at the beginning, maybe that didn’t make life easier, but we need to sort it out.
“That third pit stop definitely cost us everything we had been working for.”
When asked if the problem was similar to any of the previous problems, he said: “I didn’t check. I lost it, I shouted on the radio and I came in.”
Grosjean remained upbeat but conceded the team has a lot of work to do.
“There have been a lot of positives,” he said. “The first stint before the virtual safety car was very good. I was catching the Force India and McLaren quite quickly. Then the VSC happened, we lost the temperature of the tires and that is our struggle.
“There are plenty of other areas where we can improve but, generally, the more we do, the more we understand the car and the better things get. I’m sure the next race will be another step, and if we learn more, the better we’ll get.”