Sebastian Vettel believes that a lack of downforce is the main reason Ferrari have been unable to secure a win in 2019, despite coming close on a few occasions.
Vettel came close to a win in Canada, denied by the stewards and Lewis Hamilton, whilst Charles Leclerc has had close efforts in both Bahrain and Austria.
During winter testing Ferrari seemed to have the overall better package, but Mercedes have been far better during the season, and Red Bull even have a couple of wins thanks to Max Verstappen.
According to GPToday.net, Vettel said: "Obviously we have seen the tendency that we are faster than the others on the straights and we pay the price in the corners.
"I think we have an efficient car but we are lacking overall downforce so these two things added together to explain why we are sometimes up, sometimes down."
"But I feel we are making progress. Bahrain was an extreme where everything was working quite well. Charles was very competitive the whole weekend. After that, we struggled to repeat it for a while.
"Canada was more straightforward, Austria, Hockenheim, I think in terms of efficiency and power limited, we were able to make more of a difference than in other places."