Romain Grosjean insists that his confidence is getting higher as he seeks to maintain his recent strong run of form in India next weekend.

The Frenchman has finished on the podium in the last two races in Korea and Japan, having showed podium pace in Singapore before being forced out by mechanical issues.

With Kimi Raikkonen leaving the team at the end of the year, Grosjean's improvement on track has come at the perfect time as he seeks to cement his place as the team's number one for 2014 and he admitted that his confidence was on a high head to the Buddh International Circuit.

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"I'm feeling really good with the car, my confidence is getting higher with every race and I'm very happy with the team," the Lotus ace said, "so I'll keep working hard to improve the areas that need improving and we'll keep pushing for top results right to the end of the season.

"Our car is really performing well at the moment so I think we could be strong again. It's fair to say we struggled there a little last year with finding grip and getting the right set-up for the cars, so hopefully we can perform better this time. The tyre allocation was quite hard for the track in 2012, but this year it's softer which should help us and make for better racing."

Grosjean added that he was currently putting all of his focus into the remaining races this season, and not trying to think too much about 2014 and beyond.

"Right now I'm working on doing the very best I can at each remaining race in 2013 and I think that's the best approach for now," he said. "As soon as the season's over I'll get a little rest and recharge my batteries, then we're back to see the new cars launched and to start testing them.

"It will be a very interesting challenge with all the new rules that are coming in for next season. A new area is coming for the sport and that's always very exciting."