The Mercedes F1 W06 Hybrid is a Mercedes-Benz Formula One racing car designed and developed under the direction of Paddy Lowe, Aldo Costa, Geoff Willis, Loïc Serra, Russell Cooley, John Owen, Mike Elliott and Jarrod Murphy to compete in the 2015 FIA Formula One World Championship.

[8][9][10][11][12] The cars were driven by Nico Rosberg and the reigning World Champion Lewis Hamilton, who remained with the team for a sixth and third season, respectively.

[19][20] In Spain, the team arrived with narrower sidepods, including a small air duct at the bottom, either to aid cooling or to influence aerodynamics at the diffuser.

[23] The most obvious aerodynamic change was the curve rear wing which was introduced during Belgian Grand Prix, the introduction was to allow for a decrease in drag without the associated loss of downforce.

[26] On the basis of 12 days of pre-season testing conducted at Jerez and Barcelona, the car completed 1340 laps; a total of 6,121 km (3,803.4 mi).

Hamilton clinched his third Driver's championship one race later at the United States Grand Prix after gaining his tenth win of the season.

[37] Mercedes finished the race with both cars on the podium, behind Vettel therefore allowing him to close to within three points of Hamilton in the drivers' standings after two rounds.

[41] Rosberg had a great start and took control of the race to take his first win of the season while Hamilton, using a three stop strategy to fend off Vettel in third place, completed a 1–2 finish.

[42] Mercedes locked out the front-row once again at the Monaco Grand Prix, with Hamilton on pole position for the fifth time and Rosberg in second place.

Having held a lead in excess of 20 seconds beforehand, Hamilton was pitted under the safety car apparently with the intention of returning him to the track ahead of his pursuers.

[45] With the safety car coming into the pits on lap 70 of 78, Rosberg retained the lead unchallenged, going on to win the race for the third consecutive year whereas Hamilton finished third, unable to overtake Vettel for second position.

[46] After the disappointment of Monaco, Mercedes quickly put to rest the criticism, with another 1–2 finish led by pole-sitter Hamilton at the Canadian Grand Prix.

[53] Coming to the Singapore Grand Prix, both Mercedes struggled to be at the forefront as the cars do not suit the track, therefore performance and times slumped as a result.

On the other hand, Hamilton qualified 2nd and eased to victory by 6 seconds, ahead of Ferrari's Sebastian Vettel, clinching Mercedes a 2nd successive World Constructors' Championship.

[32][57] At the United States Grand Prix, Rosberg secured his third consecutive pole position, ahead of Hamilton as inclement weather disrupted the third part of qualifying, as a result using the times in Q2 to determine the grid.

Hamilton soon opened up a gap to his teammate and crossed the line as race winner, in addition earning his third World Drivers' Championship.

[58] At the Mexican Grand Prix, Rosberg took his fourth consecutive pole with Hamilton second, securing Mercedes's record thirteenth front row lockout of the season.