Romain Grosjean says his Lotus team is optimistic ahead of the remainder of the European stint of the 2015 season and is looking to bounce back from the disappointment of Canada.

The Lotus driver endured a difficult Canadian Grand Prix after losing out on a healthy points haul after colliding with backmarker Will Stevens when attempting to lap the Manor man. Grosjean cut across Stevens at the final chicane, causing them to connect and the Frenchman suffered a left rear puncture.

Despite Grosjean's recovery efforts - which saw him finish 10th in Montreal - he held up his hands at the mistake and aims to make amends in Austria next weekend.

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"When I watched the incident on the replay after the race it was clear that I'd made a mistake and I immediately apologised to the team," Grosjean said. "I didn't see Will straight after the race but will speak to him in person in Austria. It's certainly not a mistake I will make again.

"We've got some great races ahead and it's nice to be in Europe for a spell too. It's no secret I'm not a fan of jet lag and it took a little time to get acclimatised after our trip to Canada.

"With the shorter travel times for the next five races you can spend more time with your family and more time in the factory too. I like the next five races and the team seems confident that they should suit the car which is really positive."

Looking ahead to Spielberg, Grosjean feels Lotus can enjoy a productive race weekend with its Mercedes power unit and expects a much stronger race than 12 months ago when he limped home in 14th place.

"Last year we struggled, but this year's car is so much better that I'm really looking forward to being able to push hard all weekend," he explained. "We have a lot more potential to do well this year.

"Last year was the first time at the track for Formula 1 in over a decade and we were doing a lot of learning of the circuit and setup as well as struggling with a lot of issues with our car at the time. We couldn't get on top of the tyres and we didn't have the right package for our brakes so it was a frustrating weekend, not to mention with some reliability issues too.

"This year we should be so much better placed and I'm really looking forward to being able to attack the track."