Caterham joined arch-rival Marussia in launching its 2013 Formula 1 car in the Jerez pitlane in the hour before winter testing began on Tuesday morning.

The Renault-powered CT03 is an evolution of last year's car.

In its early years, Caterham began most seasons promising steady progress towards the midfield and eventual points.

But 2013 looks more like a campaign of consolidation for the Leafield-based team.

Last season it only just fended Marussia off for the lucrative 10th position in the constructors' championship standings.

And having begun F1 life with a pair of grand prix winners in its cockpits in the shape of Heikki Kovalainen and Jarno Trulli, financial realities have now forced Caterham towards less experienced drivers with financial backing.

Kovalainen followed Trulli out of the door at the end of 2012, and Caterham lines up for '13 with Marussia convert Charles Pic and promoted test driver Giedo van der Garde.