World Champions Mercedes has confirmed its driver line-up for the next pre-season test, which takes place at Spain's Circuit de Barcelona-Catalunya.
Lewis Hamilton will pilot the W06 Hybrid on the first day of the test next Thursday, before Nico Rosberg takes over on Friday.
Hamilton will return to the cockpit of the car for Saturday's running, with Rosberg completing the four day test for the squad.
The test takes place from February 19 to 22 at the home of the Spanish Grand Prix.