Ferrari’s Sebastian Vettel cruised to the top of the timings in the penultimate day of testing whilst more problems for McLaren limited their running. Things started well for McLaren. Stoffel Vandoorne set McLaren’s best time of the whole preseason, a 1:21.671 which put him P7 in the overall running. Vandoorne managed to get to the final hour of the morning session before stopping at the end of the main straight, an electrical problem bringing the car to a halt. The rookie did manage to get back out again in the final moments of the session, only top stop again on the outside of turn ten, bringing out the red flag and ending the session. It had been a busy morning for all teams, especially Ferrari. Sebastian Vettel teased fans as he soared around the track only to slow down at the end of the lap to creep across the line. The sandbagging meant the Ferrari didn’t dip in to the 1:18s, but he did set a 1:19.024, coasting over the line, in the final few minutes of the session, more than three tenths of a second faster than Lewis Hamilton’s fastest lap of the day. Both times would remain at the top of the timing screens by the end of the day. Ferrari and Red Bull spent the afternoon focusing on race simulations, which were disturbed by a number of red flags. The first came from Daniil Kvyat, a possible gear box problem bringing him to a stop at turn five. Renault’s Jolyon Palmer was the next man to bring out the red flags, stopping at turn 10 following a power unit change. It’s yet to be confirmed what caused Palmer’s stoppage but, if it is engine related, this is far from the first time we’ve seen problems for the French manufacturers. Honda may be stealing the headlines with their problems, but all three teams running Renault engines have battled problems so far this preseason. McLaren fans would be relieved to know Vandoorne faced no more problems in the afternoon. The team spent the afternoon session of the penultimate day of testing running basic aero checks, backing Fernando Alonso’s observation that they have completed only about two days’ worth of testing. For more thoughts on Formula One and the latest news, head to the Formula One sub forum here at RaceDepartment. Could Ferrari have really bounced back after a disappointing 2016? Do you think Renault really have serious problems? Let us know your thoughts in the comments below.