Hot topics: 10 intriguing questions for the 2015 season

It may seem an age since the chequered flag dropped in Abu Dhabi to end the 2014 season, but fear not – in less than a month the teams and drivers will be back in action at the first pre-season test of the year.

To whet your appetite, we’ve compiled a list of 10 of the most intriguing storylines heading into the new F1 campaign