Fernando Alonso has insisted only the underperforming Honda engine is preventing McLaren from being potential winners in 2017.
Valtteri Bottas set the fastest time of F1's winter on Day Two of the final test, as some of Mercedes' rivals hit trouble
Kimi Raikkonen crashed out of F1 Testing at Barcelona as Ferrari's progress on Day Two of the final test suffered a blow.
It's a Ferrari, as you've never seen it before! Kimi Raikkonen's SF70-H was fitted with large aero sensors to begin Day Two.
Lewis Hamilton and Valtteri Bottas have warned of the threat Ferrari could pose to Mercedes' Formula 1 supremacy in 2017.
Ask Crofty returns for the Final Winter Test as the countdown to the first race of the 2017 season goes into overdrive.
Barcelona test pacesetter Felipe Masssa says he's happy to help under-pressure team-mate Lance Stroll get to grips with F1.
McLaren's miserable start to F1 2017 in winter testing lurched to a new low on Tuesday when Honda's engine failed again.
Felipe Massa was the surprise pacesetter on Day One of Test Two at Barcelona as Williams topped Red Bull.
Lewis Hamilton brought a special guest with him to his latest interviews at F1 Testing in Barcelona - his pet dog Roscoe!
After an intriguing first week, teams now just have four days left of testing before the 2017 championship officially begins...
The return of Ask Crofty plus daily online blogs and SSN HQ updates from Barcelona as winter testing reaches its final week.
Could there be a chink in Mercedes' defence? What are Red Bull holding back? And just how close are McLaren to a crisis?
Don't miss a cracking final Winter Testing edition of Ask Crofty as the Sky F1 commentator puts your tweets to Daniel Ricciardo.
It's time for the final Ted's Notebook from Test One after a fascinating first four days of Formula 1 2017.
Don't miss Ted's Test One verdict as the Sky F1 pundit discusses the key points from an intriguing week in Barcelona.
Ferrari's Kimi Raikkonen ended the first winter test on top of the timesheet, but F1 2017's early pace was slowed by wet testing.
Mercedes out in front but are there reliability concerns?; What are Red Bull holding back? And what now for McLaren...
Winter Testing has already served up its fair share of crashes, and drivers had to deal with more hazardous conditions on Day Four.
Don't miss another Winter Testing edition of Ted's Notebook as the Sky F1 pundit rounds up all the latest news from Day Three.