ESPNF1 Columnist

March 3, 2012: Kimi Raikkonen revealed that a problem with the power steering prevented him from completing more than 17 laps during the morning session of the third day of testing in Barcelona

March 3, 2012: Caterham's Deputy team principal Riad Asmat is confident there is more pace to be unlocked from the team's new car, despite it setting a time at the Circuit de Catalunya on Saturday worthy of a top ten grid position at the 2011 Spanish Grand Prix

March 3, 2012: Nico Rosberg feels that Mercedes has made progress from 2011 and is now ready to find out where that will leave the team compared to its rivals

March 3, 2012: Sauber's Sergio Perez said he was "very happy" ahead of the start of the season after setting the fastest time yet in pre-season testing at Barcelona

March 3, 2012: Jenson Button said that the new McLaren upgrade was "a definite step forward" but was frustrated in his attempts to get the potential out of the car

March 3, 2012: Mark Webber has played down the influence of Red Bull's new update package and insists the team still has work to do to get the best from it

March 3, 2012: HRT has confirmed that its new car will not ready in time to take part in the final day of testing in Barcelona

March 3, 2012: Sergio Perez finished the penultimate day of pre-season testing at the top of the timesheet after setting the fastest lap yet at Barcelona this year

March 3, 2012: Kamui Kobayashi says that Sauber has "clearly" shown that it has improved compared to the previous test in Barcelona