Last year's advantage

Motor Racing - Formula One World Championship - Bahrain Grand Prix - Qualifying Day - Sakhir, Bahrain

Mercedes didn't have to worry about an outside threat during 2014, with reliability the only real aspect which could stop it winning races. In the fight against his team-mate, Nico Rosberg had the upper hand in qualifying in a season which went to the wire and took pole position in Bahrain before he lost out in an epic battle on Sunday night.