F1 Debrief: All you need to know from Test Day 4

Good morning. Welcome to our daily Motorsport F1 Debrief from testing – your quick wrap-up of all the important stories that took place yesterday as this week’s test came to an end.

Jonathan Noble Mar 2, 2018, 7:25 AM

Upd: Mar 3, 2018, 1:09 PM

After a disrupted few days of action, where cold weather and even snow limited running and made it tricky for teams to work through their programmes, there was a return to the norm as Lewis Hamilton ended the week on top.

Photo by: Sutton Images

It is clear Mercedes has made a good step with its W09, having stuck with the basic concepts that helped it grab the world championship double with its ‘diva’ 2017 challenger.

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Author Jonathan Noble

Jonathan Noble is Motorsport.com’s Formula 1 editor. Having graduated from University of Sussex Jonathan worked for sports news agency Collings Sports reporting on F1, F3, touring cars and other sports, with articles appearing in The Daily Telegraph, The Independent, Reuters, Autosport and other publications. In 1999 he moved to Haymarket Publishing to become a senior editor at Autosport Special Projects, and one year later he became Autosport’s grand prix editor. In 2015 he moved to Motorsport Network, becoming the F1 editor for Motorsport.com. He is also a member of the Guild of Motoring Writers, and sits on the FIA Media Council.

Jonathan has won multiple awards for journalism - in 1991 he was the winner of the Guild of Motoring Writers’ Sir William Lyons’ Award for young journalists, in 2010 he was awarded the Outstanding Individual accolade for consumer journalism in the Haymarket wards, in 2011 he won Haymarket’s Scoop of the Year, and in 2018 he was awarded a prestigious Medaglia d’Oro at the Lorenzo Bandini Awards for his contribution to F1 journalism.