Former F1 driver Eddie Irvine has criticised Sebastian Vettel’s attitude during the 2017 season.
The four-time world champion, who won all of his titles with Red Bull, was well on course for a fifth drivers' crown halfway through the season after an impressive opening for Ferrari.
However, a lack of form and reliability in the second half of the campaign allowed Lewis Hamilton to pull out a lead before sealing the championship with two races to spare.
The German missed the opportunity to end Ferrari’s 10-year wait for silverware, with Kimi Raikkonen the last man to lift the trophy for the Italian stalwarts, and incidents involving Hamilton in Azerbaijan and a first corner crash at Singapore did nothing to help him.
And the Northern Irishman is in no doubt that Vettel was partly to blame for his title failure.
"Sebastian really let himself down image-wise with his antics in the car, out of the car. He behaved like a spoiled brat," Irvine told motorsport-total.com
"It's frustrating for him to get four easy world championships at Red Bull, which was by far the best car and he only had to beat [former team-mate] Mark Webber."