Vettel now a mentor for his hero Schumacher's son Mick

Four times world champion Vettel, nicknamed "Baby Schumacher" early in his career and also a former Ferrari driver, has been offering advice when asked.

Mick, 22, has graduated to Formula One this season with Ferrari-powered Haas after winning last year's Formula Two title.

Michael Schumacher was Sebastian Vettel's boyhood hero, and now the younger German is providing guidance and a point of reference for the Formula One great's son Mick.

Schumacher senior, who won five of his seven titles with Ferrari, has not appeared in public since he suffered severe head injuries in a skiing accident in the French Alps in December 2013.

Mick, 22, has graduated to Formula One this season with Ferrari-powered Haas after winning last year's Formula Two title.

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Four-times world champion Vettel, nicknamed "Baby Schumacher" early in his career and also a former Ferrari driver, has been offering advice when asked.

"I am obviously friends with his father and his father is my hero," the Aston Martin driver told reporters ahead of Sunday's Austrian Grand Prix.

"We get along really well and I’m happy to help with stuff that maybe I can help with. In the driving sense, it's always difficult, every car is different and every environment is different."

An example was seen at the French Grand Prix in June when Schumacher was filmed showing Vettel the inside of his car's cockpit.

It turned out the youngster was pointing out his seat position, explaining later that he had been sitting crooked all season.

Schumacher said he valued Vettel's advice.

"He’s a huge help for me in all ways, anything on and off the track," he said.

"I’m happy that I can go back to somebody that has so much experience but also that is so likeable. Very happy he’s around."

Haas team principal Guenther Steiner said he had no problem with a rival team's driver helping his own.

"I think it's a great thing," he told reporters on Friday. "For Mick, it's an advantage.

"Vettel is in the sport for a long time and he feels attached to Mick and just tries to help him as much as he can... I don't see any issue with it."

Schumacher has been ahead of Russian rookie teammate Nikita Mazepin, whose father's company is the team's title sponsor, in qualifying and most races this season. Haas is yet to score a point in eight rounds.

"I think he knows what to do behind the wheel," said Vettel of Schumacher. "He's doing really well. I think it's not easy to come into your first year, it's a difficult situation for him.

"He seems to be lifting the whole team... I think off track, he's probably even more impressive, he's putting a lot of work in and he enjoys it."