Ferrari
Last year's constructor's title was Ferrari's for the taking but they failed. There's no sugar-coating the fact that the prancing horse blew it.
They will come back with all the horsepower they can muster to upstage reigning champs - Mercedes. But look over their shoulders and they'll see in-form Red Bull drivers with enough gusto to upset their cart.
There's a clear demarcation of No.1 and No.2 driver at Ferrari and to such an extent that Kimi Raikkonen is not allowed to win even when he is faster. It takes two cars to win a title and the Italian team is not on pole position for the constructor's title at least.
Edited by Alan John