FIA pass Lotus F1 chassis

The E23 will be the first Lotus to be powered by Mercedes, with the team switching to the German manufacturer from Renault for this season.

Lotus joins Toro Rosso, Sauber and McLaren in confirming that their 2015 machines has passed the tests required for it to take to the track.

Team drivers Romain Grosjean and Pastor Maldonado will start testing the new car in Jerez next month.