Button sets the bar at Jerez
HAPPY CHAPPY: McLaren driver Jenson Button set the fastest time out on the first day of testing.
JEREZ DE LA FRONTERA, Spain - Former World champion Jenson Button overcame a morning spent largely in the pits by setting the fastest time on the first day of Formula One testing a month ahead of the opening Grand Prix in Australia.
The 33-year-old Englishman - World champion in 2009 - overcame problems with his McLaren as he roared back in the afternoon session to record a fastest time of 1min18 over 34 laps.
"It was an up and down day, but it’s best to have this type of problem at the beginning of testing rather than the first day. We've had the problem, and I hope that we can work well this week,” said Button.
"But be careful because all these times don't tell us anything, even those on the last day of testing (March 3 in Barcelona) don't really reveal much," added the 228 GP veteran.
Red Bull's Australian star Mark Webber was second fastest after completing 73 laps in the team's new car, which they hope will deliver a fourth successive constructors' title.
"A time of 1min18 at Jerez on the first day with a new car isn't bad at all," said Webber, whose team-mate, three-time world champion Sebastian Vettel didn't take to the track.
Lotus's unpredictable French driver Romain Grosjean was third-fastest, while Socttish driver Paul di Resta was in fourth in the new model Force India car.
Webber's compatriot Daniel Ricciardo set the pace in the morning session in the new Toro Rosso car, but ended up fifth-fastest.
Button's former McLaren team-mate Lewis Hamilton didn't take to the track in his Mercedes, whose day's work had been cut short after German driver Nico Rosberg's car caught fire after just 14 laps due to an electrical fault.
Minnows Marussia had an inauspicious day just hours after unveiling their new car. British rookie Max Chilton crashed after exiting the track - although he managed to complete 29 laps - but was way off the pace of the 10 other drivers with his best time over six seconds slower than Button's.
Marussia are likely to be trading blows at the back of the grid with Caterham this season after the withdrawal of 2012’s tail-enders , HRT.
1 Jenson Button (GBR/McLaren-Mercedes) 1min18.861 - 77 laps
2 Mark Webber (AUS/Red Bull Renault) 1min19.709 - 73laps
3 Romain Grosjean (FRA/Lotus-Renault) 1min19.796 - 54 laps
4 Paul di Resta (GBR/Force India-Mercedes) 1min20.343 - 89 laps
5 Daniel Ricciardo (AUS/Toro Rosso-Ferrari) 1min20.401 - 70 laps
6 Felipe Massa (BRA/Ferrari) 1min20.536 - 64 laps
7 Nico Hulkenberg (GER/Sauber-Ferrari) 1min20.699 - 79 laps
8 Nico Rosberg (GER/Mercedes) 1min20.846 - 14 laps
9 Pastor Maldonado (VEN/Williams-Renault) 1min20.864 - 84 laps
10 Giedo van der Garde (NED/Caterham-Renault) 1min21.915 - 64 laps
11 Max Chilton (GBR/Marussia-Cosworth) 1min24.176 - 29 laps