[1] The chassis was designed by James Allison, Nick Chester, Martin Tolliday and Dirk de Beer with Renault supplying the team's engines.

The car was driven by 2007 World Champion Kimi Räikkönen and Romain Grosjean,[6][7] both of whom remained with the team after competing in 2012.

[9] Despite the perpetual troubles the team experienced with the "passive Drag Reduction System" device on the E20 chassis, which spent most of the 2012 season in development without ever being raced,[10][11][12] the E21 was launched with a passive DRS device of its own.

[13] Following criticism of the cars raced in 2012 for being "ugly" because of a visible step in the design of the nose,[14] the 2013 technical regulations allowed teams to use a "modesty panel", or a small piece of carbon fibre designed to cover the nose of the car for aesthetic purposes.

(key) (results in bold indicate pole position; results in italics indicate fastest lap) † Driver failed to finish the race, but was classified as they had completed greater than 90% of the race distance.