Mark Webber set the fastest time in the final practice session ahead of qualifying for this weekend's Brazilian Grand Prix.
Webber was quickest amid a bunch of late runs on intermediate tyres as the wet conditions slowly improved throughout the session. With teams cautious about putting too many laps on their limited selection of full-wet and intermediate tyres, four drivers did not bother to set laps and several stayed off the circuit when it was at its fastest.
The two Lotuses were among those on the track in the final ten minutes and Romain Grosjean set the second fastest time, 0.304s off Webber and 0.400s faster than his team-mate Heikki Kovalainen in third. Valtteri Bottas was fourth fastest in the Williams ahead of Nico Hulkenberg in fifth, who in previous years at Interlagos has been something of a specialist in these conditions.
Vettel set a time on the full wets but did not venture out on intermediates and therefore set the second slowest times of those who set a flying lap. Nico Rosberg, Fernando Alonso, Jenson Button and Felipe Massa did not set times and Button only completed one installation lap during the entire hour. Massa, meanwhile, was preoccupied by posing for photos with Ferrari guests and signing farewell messages on one of his mechanic's arms, completing just two laps.
None of the drivers clocked up extensive mileage in the knowledge that a two-hour turn around ahead of qualifying would make any mistakes in the tricky conditions particularly costly. Esteban Gutierrez completed the most laps of all with 21 to his name by the end of the hour.