As Formula 1 entered its second and final four-day test of winter 2016, the development of the cars remained low key, with no teams scheduling massive upgrades in this year's compressed testing schedule. Programmes generally focused on long runs and simulations for the new qualifying format.
But there were some technical novelties to be found, with nearly every team having something new and the most notable updates brought by Mercedes and Toro Rosso. Teams also relaxed the tight pit security of the first week and we were able to see some of the hidden technical detail on other cars.
MERCEDES' EVER-MORE COMPLEX BODYWORK