Nico Rosberg has moved to the top of the timesheets in final free practice ahead of qualifying for the Brazilian Grand Prix but changeable weather conditions threaten to make their presence felt at Interlagos.
With light rain falling over the morning and cooler than usual temperatures, FP3 began damp in some areas but would promptly dry enough for drivers to post faster times than they had managed a day earlier in FP1 and FP2.
With the best of the laps coming in the final 15mins, Rosberg turned in the quickest lap of the weekend with a 1min 11.740secs, though Lewis Hamilton remains closely matched just 0.093secs ahead of a potentially crucial qualifying session.
Sebastian Vettel popped up to third fastest in the closing stages, just two tenths off the top spot, marginally ahead of Kimi Raikkonen, Max Verstappen and Daniel Ricciardo.
Valtteri Bottas maintained Williams' decent start to the weekend in seventh position, while Jolyon Palmer was an eye-catching eighth quickest for Renault, ahead of Felipe Massa and Fernando Alonso.
Elsewhere, Romain Grosjean suffered a spin en route to 15th quickest in the Haas, while Marcus Ericsson failed to set a time after suffering engine problems in his Sauber.
Qualifying takes place at 16.00GMT with rain forecast intermittently across the day.
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