Sauber endured a woeful Canadian Grand Prix as neither driver finished the 70 lap race.
Nico Hulkenberg retired following contact with Giedo van der Garde while Esteban Gutierrez crashed out.
"It’s disappointing to finish a race like this. Lapping can be troublesome, but these guys are racing too and have things happenings in the race, the same as us. I lapped Giedo van der Garde and braked," he said.
"At first I didn’t feel anything until I came out of the corner and realised the car wasn’t going straight, so we decided to stop. Even after we lost positions at the start of the race, we didn’t really have the pace today. I was fighting for 14th and couldn’t do much more. Of course this is not an ideal way to end a race, but in the end we wouldn’t have gained much more."
Gutierrez admits that he simply made an error.
"For the entire race the car was difficult to drive, and I was always pushing to the limit," he said.
"Right from the start everyone was closing in. The first set of tyres was difficult to drive on and a one stop would have been impossible. When I came out from my second pit stop into the fist corner, I went over one of the bumps, the front locked up and I couldn’t stop."
Team principal Monisha Kaltenborn says the nature of the Circuit Gilles Villeneuve exacerbated the problems with the Sauber C32.
"This is a weekend to forget. We knew this track wouldn’t really suit our car. If you have weaknesses on the car in addition to a track that doesn’t suit you, then it’s twice as hard. We have a lot of work to do," she said.