Jean-Eric Vergne says Montreal practice crash was costly after poor Canadian Grand Prix qualifying result

The Toro Rosso driver failed to complete a flying lap in the morning session after sliding off track and damaging his car against the barriers.

With no Saturday running prior to qualifying, the Frenchman struggled for pace and was outqualified by the two Caterhams, finishing down in 20th position.

"My little mistake in FP3 cost me a lot," said Vergne. "I didn't get any running this morning and then this afternoon, I never really got a clean lap, encountering a lot of traffic which is therefore very disappointing.

"On top of that, my car was quite different today to yesterday, so it was not the easiest thing to adapt to it in just a couple of laps in Q1.

"Even if the traffic would not have made a huge difference to my position on the grid, some cleaner laps would have allowed me to improve my performance and get a better feel for the car with this different set-up."

Team-mate Daniel Ricciardo was happier with his performance after qualifying in 14th place, a result the Australian considered to be decent given Toro Rosso's lack of pace in Montreal.

"This result is not too bad, considering the pace we showed so far this weekend," he said. "Fourteenth was probably about the best we could have done as there is a three tenths gap to 13th place. I managed to outqualify some of our usual competitors, but 14th is not going to set the world on fire and we always want to do better.

"However, we can be satisfied with the way we improved the car over the two days, taking a step forward and hopefully we can make further progress tomorrow."