Mercedes has gone from perpetual winner to rank outsider in the space of a winter – and an aerodynamic phenomenon known as ‘porpoising’ is said to be to blame. But what does that actually mean, and how can the team lift itself out of such a drastic competitive slump?

On this month's podcast we explore the struggles facing Mercedes and how long it might take to fix.

We also report on the forthcoming Miami GP and discuss the future of Aston Martin, given their slow start to the season.