Grosjean welcomes additional running in Mugello F1 test

The Frenchman was scheduled to drive today only, with team-mate Kimi Raikkonen taking over for the final day.

However, the poor weather on Tuesday meant Lotus decided to change its plans and keep Grosjean for tomorrow too in order to have a consistent baseline to work with.

Grosjean, quickest today, welcomed the additional track time.

"The more time I spend in the car, the better I feel," Grosjean said at the end of the day. "It's only my first season so the more time I spend in the car it's better for me.

"I really want to go far with this team and be world champion one day if everything goes well. You need a lot of things, but this is our goal and if we can achieve this by growing up together I would be very happy."

The Frenchman, who finished on the podium in the previous race in Bahrain, said his quickest time today meant little however.

"It's always good to end the day on top, but we have to remember that in testing lap times mean very little," he said. "Having said that, the car felt great and I was very comfortable from the start.

"This test gives us an opportunity to try things that we wouldn't have time to do during a race weekend, so hopefully it'll help us to keep pushing forward.

"We've done a lot of set-up work today, and for sure we'll need to take some time to look through all the data and analyse what we need to focus on tomorrow, but it's a good baseline for the final day."