Sebastian Vettel questions Lewis Hamilton’s excitement for F1 after poor results

Sebastian Vettel has won four world championships (David Davies/PA)

Sebastian Vettel has questioned whether Lewis Hamilton is still excited by Formula One following the seven-time world champion’s downturn in results.

In an interview with the PA news agency ahead of this weekend’s Azerbaijan Grand Prix, Aston Martin’s Vettel also admitted he was scared by the prospect of retiring from F1 and believes the sport is “missing” sacked race director Michael Masi.