Ferrari’s Kimi Raikkonen topped the timings in the final day of testing, despite stopping on track in the second part of the day. It was another tough day for McLaren. Fernando Alonso stopped twice with the same electrical problems teammate Stoffel Vandoorne encountered the day before, bring out the red flag on both occasions. “Various electrical components in the PU and chassis were changed overnight, and the team are making further changes to eliminate variable and identifying the sources of the problem,” McLaren said in a statement. Alonso did manage to get back out in the afternoon and didn’t bring out any more red flags. The Spaniard managed a full 43 laps before the chequered flag fell on preseason testing. As always, McLaren weren’t the only team with problems. Red Bull’s Max Verstappen started the day with fast laps, setting the team’s fastest lap of the preseason so far, but second on the timing screens is only half the story. Verstappen completed 71 laps over the course of the day, the team’s testing limited by a turbo problem. The Red Bull junior team also ran into problems, with Carlos Sainz stopping on the start finish straight towards the end of the day with a currently unknown problem, bringing out the red flag. The Spaniard had been running race simulations after setting the third fastest time of the day earlier in the session. Surprisingly, the Ferrari powered teams also faced problems. Haas’ Romain Grosjean was the first to bring out a red flag on the final day of testing when he ran into the gravel at turn five. That may be due to driver error – though there is yet to be any official confirmation for the cause of the off – and the team will be a little more worried about the second stoppage. Grosjean stopped on the back straight not long before lunch, bringing out the red flag again. The Ferrari works team almost made it to the end of the session, before the team hit problems. Raikkonen’s SF70H suffered problems whilst out on track, The Finn was on his way back to the pits when the rear tyres locked and he span to a halt on a disused section of the track. Mercedes, one of the few teams to not suffer problems, could only manage fourth and fifth in the final day of testing. They’re still favourites going into the first race later this month, but Ferrari might just be able to bring the fight to them. For more thoughts on Formula One and the latest news, head to the Formula One sub forum here at RaceDepartment. Will Ferrari bring the fight to Mercedes? And who do you think will be leading the championship after race one? Let us know your thoughts in the comments below.