Vettel took fastest lap-time in the final session of his running, best time with 1.36:490, McLaren’s Lewis Hamilton done second fastest lap-time with his final attempt. Williams’ Pastor Maldonado, Ferrari Fernando Alonso and Nico Rosberg completed top five for final free practice for US Grand Prix.
Felipe Massa set sixth fastest ahead of Red Bull’s Mark Webber, Sauber’s Sergio Perez took eighth fastest. Force India’s Nico Hulkenberg and McLaren’s Jenson Button completed top ten.
Sauber’s Kamui Kobayashi was the first driver out of third practice session and his team-mate Sergio Perez also joined with him.
After the first-half hour McLaren’s Lewis Hamilton and Jenson Button took top quickest lap-time, following Red Bull duo Sebastian Vettel and Mark Webber posted third and fourth quickest lap-time.
Following the first ten minutes Sauber’s Sergio Perez and Marussia’s Charles Pic making contact at Turn 7, Mexican passes by the Frenchman and shuts the door a little too resolutely, following the incident Sauber reports that Perez damaged his front wing.
Championship contender Fernando Alonso struggled too much in turn 19 running, finally he set fourth fastest behind the William’s Pastor Maldonado.
Jean-Eric Vergne the only man discontinue the third practice session following his Toro Rosso’s suspension failure, he was hit the Kerb a tad too hard and the French man just completed 12 successive lap.