F1: Five things we learned from testing

FORMULA ONE! Here is a look at five things we learned from the first four days of pre-season testing.

New cars make drivers 'gladiators' - Rosberg

Retired Formula One world champion Nico Rosberg believes more powerful "monstrous" cars for the 2017 season will mean more exciting races.

F1: Bottas in 8-year Barcelona high

Valtteri Bottas demonstrated his readiness to step into the shoes of retired world champion Nico Rosberg by setting the pace.

Raikkonen fastest as Hamilton battles

Kimi Raikkonen showed promising signs for Ferrari by outpacing a Lewis Hamilton bruised by Formula One's more powerful cars.