E.Dams-Renault's Sebastien Buemi set the fastest time of pre-season testing at Donington Park with a lap of 1:31.083s to finish two-tenths clear at the top of the timesheets for the second day in succession.
The 25-year-old Swiss, who has now topped three of the four pre-season tests, beat the previous best time set by Audi Sport ABT driver Lucas di Grassi.
Mahindra Racing's Bruno Senna and Karun Chandhok clocked the 10th and 13th fastest time in the session held yesterday.
With few reliability problems, all 10 teams racked up the mileage with a combined total of 840 laps for the day.
Di Grassi initially lowered the benchmark clocking a 1:31:282s in the morning session. The Brazilian, who went quickest on day two, has looked strong throughout testing.
Ex-Formula 1 and GP2 driver Jerome d'Ambrosio ended the day third for China Racing while Scott Speed, testing for Andretti Autosport, was a place further back in fourth.
Briton's Sam Bird who headed-up testing duties for Virgin
Racing in the afternoon session finished fifth with team-mate Jaime Alguersuari seven places back in 12th.
Audi Sport ABT driver Daniel Abt put in a strong performance in sixth position, ahead of Nicolas Prost in the e.Dams-Renault. Despite a brief visit to the gravel trap in the morning, Jarno Trulli produced his quickest time of the test so far to finish ninth overall.
Nick Heidfeld taking over from his Venturi team-mate Stephane Sarrazin managed 78 laps on his way to eighth in the standings.
Andretti Autosport's Franck Montagny started the day with blistering pace, clocking his fastest time of the test so far with a 1:32.958s. He eventually improved by a further four-tenths to complete the day just outside the top 10.
Argentina's Juan Manuel Lopez spent the day behind the wheel of the China Racing car and finished in a respectable 15th position.
The fifth and final test takes place on August 19 with free access to fans.
