ESPNF1 Columnist

February 5, 2013: Red Bull's Mark Webber thinks Jenson Button's pace on the first day of testing was "strong" as the 2013 cars all took to the track together for the first time on Tuesday at Jerez

February 5, 2013: Romain Grosjean said the performance of the new Lotus E21 was "even better" than he'd been expecting on the opening day of the first test

February 5, 2013: Jenson Button has warned against reading anything into his headline time on the first day of testing in Jerez on Tuesday

February 5, 2013: Williams technical director Mike Coughlan said the team had been able to gain a good understanding of the new Pirelli tyres by running its old car on the opening day of testing

February 5, 2013: Max Chilton attributed his crash during the first day of testing at Jerez to a component failure on the new Marussia

February 5, 2013: Mercedes' running on the opening day of the first test at Jerez was ended early on by a wiring loom fault

February 5, 2013: Felipe Massa says the F138 is "on a completely different planet" to Ferrari's 2012 car after the first day of testing at Jerez

February 5, 2013: Bernie Ecclestone says he is "very impressed" with the ongoing work at Sochi ahead of its hosting of the 2014 Russian Grand Prix

February 5, 2013: Jean-Eric Vergne insists he is not worried about facing the same fate as his predecessors at Toro Rosso, Jaime Alguersuari and Sebastien Buemi, as he enters his second year with the team

February 5, 2013: Toro Rosso is courting a Renault engine supply in 2014 in the hope it can benefit from Red Bull's works deal with the French engine supplier

February 5, 2013: Caterham team principal Cyril Abiteboul has said his team cannot be satisfied with just beating Marussia this year

February 5, 2013: Emirates Airlines has been announced as a global partner of Formula One on a five-year deal

February 5, 2013: Lewis Hamilton talks to the media after his first day in the new Mercedes on Monday

February 5, 2013: The first test of the 2013 season got underway at Jerez in chilly but bright conditions, with all 11 teams present

February 5, 2013: Caterham unveiled its 2013 car, the CT03, shortly before the start of the first day of testing in Jerez