Water-tank trucks were arranged to a damp condition in the Circuit de Catalunya in the early morning and during the lunch break to give teams a chance to run wet weather tyre testing.
Red Bull’s Max Verstappen done 85 laps in the RB13 and he was the quickest driver to complete a lap on the intermediates during the morning wet session.
Renault separated the final day of testing between its two race drivers with Nico Hulkenberg taking the morning session and Jolyon Palmer drives the afternoon. Palmer led Renault’s charge in third place and teammate Nulkenberg managed only eighth fastest.
Haas F1 speedy Romain Grosjean was fourth fastest and led the mileage charts hits with 118 laps.
Antonio Giovinazzi again made fantastic job for Sauber, stays as a substitute role for the injured Pascal Wehrlein, finishing fifth. Sergio Perez was sixth for Force India.
McLaren improving well, Stoffel Vandoorne racking up 66 laps behind the wheel of the MCL32. Valtteri Bottas made 68 laps in the Mercedes following an electrical trouble in the morning session meant Lewis Hamilton was unable to complete a single lap.
Toro Rosso just completed a single lap, once again an engine issue on its STR12 car delayed their entire day of testing, while Williams sat out completely due to damage continuous to its car on Wednesday.