Vettel finished fourth in the season-opening race in Melbourne and then fifth in Bahrain, where he was eclipsed by decade-younger team-mate Leclerc.
With all the talk about Ferrari, it is easy to forget that Mercedes won the opening two races.
Anak Michael Schumacher beri kejutan berjaya kemudi jentera Ferrari dan berada di kedudukan ke-8 dan ke-6 dalam F2
Bermula di petak pertama tidak menjaminkan apabila apa jua kerosakan mungkin berlaku sepanjang perlumbaan
Leclerc tewaskan Vettel, Hamilton dan Bottas untuk bernula di petak pertama di Litar Bahrain.
Vettel, the most successful driver there, has won four times including the last two in a row.
Ferrari's 4-time world champion Sebastian Vettel will be seeking his 3rd straight victory in Bahrain in Sunday's race.
Ferrari are the most successful team in Bahrain.
The Ferrari P80/C took four years to create and is based on a 488 GT3.
Sebastian Vettel complains about his car's performance around corners, a problem likely to be related with the balance setup.
The German four-time world champion waxed positive on Ferrari's new car during a public meet-and-greet with fans in Melbourne.
The new logo honours the establishment of Scuderia Ferrari in 1929 by Enzo Ferrari and his associates.
LeClerc finished the year in 13th place overall in the drivers' championship with one top-six finish to his credit.
Lewis Hamilton hopes to keep his performance up in the face of new contenders even as the sport prepares to face new challenges this year.
The combustion engine will be smaller, stronger and cleaner than a previous model.
Instead of Sebastian Vettel and teammate Charles Leclerc sharing the daily duties, they will now do a day each with the Monegasque in the car on Thursday and Vettel on Friday.
Only Ferrari seems to be a competitor without a SUV at present although plans are in the pipeline to build the first Ferrari SUV before 2021.
Raikkonen's lap was also the first time a team had gone faster in 2019 than they managed in last year's pre-season testing.
Vettel views Leclerc as a "full rival" and will take him seriously.
Ferrari's times have been quicker after suffering from last year's four-day test at Circuit de Catalunya.
Team boss says that a chaotic Brexit would be a nightmare for his team.
Ferrari driver says car worked excellently and thanks factory for a perfect drive.
The supercar hybrid is now expected to come with a V8 supported by an electric motor.
Sebastian Vettel is heading into his fifth season with the team while Leclerc has replaced Raikkonen.