There is more to come from Lotus, that's the message from team principal, Eric Boullier in the countdown to the Spanish Grand Prix.

The Enstone-based outfit has made a strong start to the F1 2013 World Championship, with Kimi Raikkonen taking one victory and two runners-up spots, while team-mate Romain Grosjean got his first rostrum of the season in Bahrain last time out.

The team now sits second in the Constructors' Championship, just 16 points behind the leaders Red Bull Racing and Boullier is confident the squad can maintain its run of accomplishments during the rest of the year.

"We always want to win and our podium successes this year seem to have made us all the more hungry to taste the champagne," Boullier stated. "We know we are facing other equally competitive teams and only one team and driver get to stand on that top step at each race. But it would be fantastic to start our European season with a win."

"We have a strong development programme for the E21 and I'm confident we can continue to improve it through the year, just as we did with the E20 before it. Most teams tend to bring a fairly major upgrade package to the first European race of the season and we'll be no exception," he added. "I'm very pleased with how the development of this car is progressing and I think there's plenty more to come from us."

As for the secret to the team's success, Boullier said it is simply down to 'good strategy, a good car and two good drivers': "Achieving a one-off result is one thing, but keeping momentum is a far bigger challenge and I'm pleased to say we're doing a great job of that so far this year," he continued.

"It's such a finely balanced and competitive season. If we look to our most recent race in Bahrain, on Saturday it looked like maybe we had lost our edge having qualified below expectations. Fortunately, we were always confident in our race pace and that confidence proved to be well placed.

"To come away with a double podium when the top six would maybe have been a more realistic pre-race target was a great performance from everybody involved. There was a pretty special feeling in the race team and that was just magnified when I got back to Enstone to see everyone in the factory. It was a well-deserved result.

"Romain clearly enjoyed every second on track - making a solid start and pulling off some strong overtaking moves - and I think that enjoyment showed in his performance. Consistency has been there already for him in the first three races, but I think fighting at the front again will come as a big relief to him after a difficult start to the year. His season really starts now.

"[As for] Kimi [who is second in the Drivers' Championship], he is a fantastic driver and you can never rule him out in any race.

"In Bahrain, he drove a strong race to manage the tyres and was comfortable in second by the chequered flag. In Australia he won the race and said it was one of his easiest wins. We want to ensure he has more easy races in the future," Boullier concluded.