Red Bull boss Horner says 'Mercedes are the benchmark'

Christian Horner believes Mercedes are still the team to beat in Formula 1, describing them as "the benchmark".

The Red Bull Racing Team Principal was speaking on a special Formula 1-themed edition of BBC One's A Question of Sport, where he appears alongside Suzi Perry, David Coulthard and McLaren driver Kevin Magnussen.

You can watch the show on BBC One at 22:45 GMT on Wednesday 25 February and at 19:30 GMT on Friday 27 February, and click here to follow A Question of Sport on Twitter.