The Mclaren underneath Button seems the car to beat based on times after day 1, but there could be some showboating and upstaging as teams try and hide the real picture. Button finished the day one second ahead of the Red Bull of Webber. Mclaren has lost Lewis and gained the fast but inconsistent Sergio Perez, who manages his tires just as well as his more experienced team mate and the 2009 world champion. They won the last race of 2012 and will be favorites to win in Australia if these times are anything to go by.
Webber and Grosjean in the E21 ended the day separated by less than a tenth. But with the first day of testing usually having a program of checking systems rather than setting times, its anyone's guess. Grosjean will be hoping to have an incident free start to the season, but there is always the chance that he can become pivotal in deciding the title.
Force India are the other team apart from Marussia to have a seat vacant for the 2013 season, and it seems more and more likely that the seat will be filled by Jules Bianchi. Fans are hoping either Kovalinen or Kobayashi stand an outside chance of getting picked up, as both lost their seats to pay drivers looking to get into the sport.
Sauber and Red Bull seem to be taking a similar direction with radiator packaging, shape and design of the nose which has led some to question the possibility of another spygate saga in the making. Sauber had a good 2012 with 3 podiums and further points finishes, but with this years all new driver line up Hulkenberg and Gutirrez they will be looking for that elusive win.
Caterham and Marussia are both looking to get into the midfield and the all new Marussia helped with input from Mclarens wind tunnel and the addition of KERS seems to look the part. Caterham will be starting the year with an evolution of last years car with a new exhaust that is causing a few murmurs along the pitlane. James Allison, technical boss at Lotus was heard stating "There is one feature of the Caterham exhaust which I dont think will be there when we get to Melbourne".