Christian Horner has been left with a “sour taste” over races he feels Ferrari should not have been winning last year courtesy of a controversial engine.

In September 2019, Ferrari claimed three consecutive race victories in Belgium, Italy and Singapore. However, a subsequent FIA investigation into their engine led to Ferrari reaching an undisclosed settlement before this season began.

Since then, Ferrari have been well off the pace and, at the Belgian Grand Prix, they were the only team setting slower lap times than 12 months ago. Whereas they locked out the front row at Spa last year, this time Ferrari’s two cars both qualified for and finished the race in P13 and P14.