Reigning driver and constructors' world champions Red Bull unveiled their new car for the 2014 season as pre-season testing got underway in Jerez, southern Spain, on Tuesday.
The Renault-powered RB10 will spearhead four-time world champion Sebastian Vettel's attempt to tie compatriot Michael Schumacher's record of winning five successive championships.
Vettel stormed to the title last season by a massive 155 points from Ferrari's Fernando Alonso.
However, a series of technical rule changes implemented for the new season is expected to produce a more competitive title race.
Vettel also has a new team-mate for 2014 in Australia's Daniel Ricciardo, who has joined after two seasons with sister team Toro Rosso.
Ricciardo replaces Mark Webber who retired at the end of last season.