The car has been overseen by technical director James Allison.
Introducing the car, Allison said: “There’s a lot gone into it, and it’s going to be an exciting car. The rules for 2013 are very, very similar to those of 2012, so you can expect a lot of family resemblance from a 2012 car.
“But as ever in F1, the devil is in the detail, and the detail of this car adds up to a significant amount of performance. It’s a mixture, there’s some neat new ideas in there, and a lot of pushing of the same sort of concepts that we’ve been working on for a few years.”
The car still has a nose step, and Allison confirmed that weight concerns meant no vanity panel has been fitted as yet.
“We have not done it yet because the cosmetic panel would weigh a few grammes, and with an F1 car putting a few grammes on that you don’t need to is really anathema to us. However if we find a cosmetic panel that looks nice and much more important and crucially develops a bit of downforce then we’ll pop it on as quick as you like!”
Kimi Raikkonen noted: “It’s not going to be easy to improve on what we did already last year, but that’s our aim, to do better, not just for the drivers, but the team also. Hopefully we can do it.
“We tried to improve in all areas, and for sure if you can qualify more higher up it will give you a much better chance to win more races and makes your life much easier on race days. It’s the whole package that they’ve been trying to make faster and hopefully they’ve managed to do that.”
Meanwhile Romain Grosjean said: “The team did its best to improve from last year. I think we had a beautiful car last year to drive, really nice. Kimi won a race, we had some podiums. Everybody wants more, and that’s what we’re trying to achieve.”
Three other drivers are in the Lotus squad this year, the team explaining: “Third Driver is reigning GP2 series champion Davide Valsecchi, whilst Nicolas Prost will perform Development Driver duties. Jérôme D’Ambrosio will continue with the team as Reserve Driver.”