Wednesday 1 March 2017 08:58, UK
Sky F1's Ted Kravitz summarises the action from Day Two at Barcelona, and reports on fast starts for Ferrari and Mercedes.
But while the Scuderia and Silver Arrows have made near-flawless starts to testing, a problem with the MCL32's oil tank has put McLaren, once again, on the backfoot.
Ted reports on their issues, digs into claims of a Ferrari 'media blackout' and also hears from a former world champion for his thoughts on the pre-season action so far.
Play the video at the top of the page to hear from Ted.
The Sky Sports F1 Digital team will be providing live commentary from dawn until dusk for all days of winter testing, while Sky Sports News HQ will also deliver live updates from trackside.
