Red Bull and Ferrari edged the Mercedes pair out of the top three in second practice at Singapore, led by Daniil Kvyat.
Felipe Nasr has collected his first reprimand of the season after falling foul of the run-off are at the first corner at Singapore.
The first practice session for the Singapore Grand Prix ended with the customary Mercedes one-two – and Alexander Rossi’s Manor in the barrier.
Pictures from the build-up to the 2015 Singapore Grand Prix.
The air quality is improving in Singapore following fears haze could disrupt the running of this weekend’s race.
Manor driver Roberto Merhi only learned he would not be racing in this weekend’s Singapore Grand Prix after arriving at the circuit.
Don’t miss any of the 2015 Singapore Grand Prix sessions – here are the times for all of this weekend’s action.
Having been forced out of the last race in Italy Nico Rosberg needs a change of fortunes at Singapore – where he also suffered technical trouble last year.
Pirelli will bring its softest combination of tyres for the second Russian Grand Prix after last year’s tyre selection was found to be very conservative.
The Singapore Grand Prix track layout has been revised in an attempt to aid overtaking around the tight street circuit.
The 2015 F1 calendar will feature a record-breaking 21 races as South Korea makes a surprise return to Formula One next year.
The FIA has published the official 2015 F1 calendar which includes 20 races.
The return of the Mexican Grand Prix next year will increase the 2015 F1 calendar to 20 races.