Charles Leclerc says he still has a lot to learn but pinpointed fast corners as his primary weakness, following another free practice outing with Haas.
Ferrari youngster Leclerc has received substantial Formula 1 mileage this month, having participated in FP1 runs with Haas in Britain, Hungary and Germany, alongside a test outing for Ferrari at Silverstone.
Leclerc clocked the 17th quickest time, three-tenths adrift of team-mate Romain Grosjean, with both drivers clocking their best laps on the Soft tyres.
"We have data so we look at the data," he said when asked how he has been learning from Grosjean.
"Romain is really fast in the fast corners so I have a lot to learn in these fast corners.
"In the slow corners we are quite similar but I still need to learn quite a lot in fast corners."
Leclerc also commented that Formula 1 machinery is beginning to feel more normal after a sequence of runs.
"A little bit yeah, of course a little bit more every time I jump in the car I have more confidence," he said.
"It’s only the third time I go in it [the Haas VF-16] so I still have a lot to learn, the car which feels less and less normal now is the GP3 as getting back to the GP3 car is a really big difference.
"But I’m working on it and now I’m going to go back to reality in the GP3 paddock soon."