The Sauber F1 Team have confirmed the 2015 C34 will be taken to the first test of the 2016 test in Barcelona. The C34 will be adorned with the 2016 race livery.
The team will bring the 2016 C35 to the second and final pre-season test of the 2016 Formula One calender also in Barcelona 1 week later on March 1st, leaving the team only 4 days of running in the new car and a little over 3 weeks until the season opener in Melbourne Australia.
The team have previously stated that the C35 will be more evolution than revolution of the C34. The team have not commented on the rationale not taking the C35 to the first pre-season test.