Jules Bianchi was quickest on the final day of the in-season test at Silverstone as he made a substitute appearance for Ferrari.
With Kimi Raikkonen skipping the test in order to recover from his accident on Sunday in time for the German Grand Prix, Bianchi filled in and set a best time of 1:35.262 to top the timesheets on the second day. His time was just 0.020s slower than Felipe Massa's best from Tuesday, with Daniel Ricciardo the second quickest over the two days – 0.006s slower than Massa.
On Wednesday it was Daniil Kvyat who was second fastest but then a timing glitch saw him originally finish the day top of the times with a 1:12.004 before it was reset to a 1:35.544. It wasn't the only anomaly of the day as Kvyat also caused a red flag in the morning session.
Kevin Magnussen was third fastest as he set a time of 1:35.593 among his total of 91 laps, leaving him 0.7s clear of Giedo van der Garde. However, van der Garde's day ended on a low note as he crashed at Copse, bringing out the red flags and damaging the barrier significantly enough to end the day early.
British Grand Prix winner Lewis Hamilton was fifth for Mercedes but managed little running on Wednesday morning. Having carried out some constant speed aero tests, Hamilton was caught out by cold tyres and spun off at Stowe, leaving him in the garage for the rest of the morning having completed only five laps. In the afternoon, Hamilton recovered to post a further 42 laps before the premature stoppage.
After Massa topped the times on Tuesday, Valtteri Bottas was sixth for Williams and nearly two seconds off the pace. He finished just 0.1s ahead of Max Chilton and Dani Juncadella in the Force India.
Sebastian Vettel ended the day in ninth place as he tested tyres for Pirelli – completing 76 laps – but it was Charles Pic in the Lotus who had the majority of the tyre attention as he spent the morning running Pirelli's 18-inch concept tyre before a technical issue confined him to the pits for a number of hours.
Julian Leal was slowest – over seven seconds off the pace – on his Caterham debut but did well to recover to complete 51 laps having spent most of the day in the garage as the team needed to change the CU-H in its Renault power unit. The delay meant there was no running for Rio Haryanto.