Scuderia Toro Rosso freshman Jean-Eric Vergne has hailed the second day of running at Mugello as his most productive yet.

Although the Frenchman was due to share track time with team-mate Daniel Ricciardo, the team opted to delay the Australian's entrance in order for Vergne to complete his programme after a lot of Tuesday was written off to heavy rain. In all, the former F3 champion covered 65 laps as he completed comparison tests with different diffusers and, in the afternoon, switched to an evaluation of different exhaust systems. His 1min 24.422secs fastest lap left him sixth on the day's timesheets.

"In the short time I have been in F1, I would say this was the best day's testing I have done," Vergne reported, "We had no problems, we got through a lot of items on the job sheet and, as a first impression, the new elements we tested seem to work well.

"Daniel still has more things to try tomorrow and, if we can put all the best elements of this test together, then I am hopeful it could represent a step forward in Barcelona. The team also worked well, with the mechanics having to change a lot of parts in a short space of time to get the job done, so overall, a positive day."

Ricciardo was due to take over driving duties immediately after the lunch-break, but was restricted to just 22 laps on the day. Unlike many of his contemporaries, the Australian had previously driven at Mugello and, despite just having two short runs at the end of the day, was immediately on the pace, clocking a 1min 22.588secs best to sit seventh, right behind his team-mate.