Ferrari has experienced a difficult start to the 2020 season after suffering a huge drop in straight-line speed performance compared to last year.
Sebastian Vettel and Charles Leclerc finished 13th and 14th respectively in Sunday’s Belgian Grand Prix as Ferrari spent a total of five laps with a car running inside the top 10.
The drop in performance has come following Ferrari’s controversial private engine settlement with the FIA over the winter amid questions from rivals over the legality of its power unit last year.
Red Bull team principal Christian Horner said the affair still left some lingering frustration despite seeing Ferrari drop out of contention at the front this year.
“The whole thing has left quite a sour taste,” Horner said.
“Obviously you can draw your own conclusions from Ferrari’s current performance.
“There are races that we should have won last year arguably if they had run with an engine that seems to be quite different to what performance that they had last year.
“It’s obviously very tough for them, but I think their focus has obviously been in the wrong areas in previous years, which is why they’re obviously seem to be struggling a little with whatever was in that agreement.”
Mercedes F1 chief Toto Wolff has previously spoken about the pressure…