LEWIS Hamilton let his heart rule his head in a remarkable moment of sportsmanship at the Hungarian Grand Prix which could ultimately cost him the championship.

As Sebastian Vettel took the chequered flag at the Hungaroring to claim his fourth victory of the season, his chief title rival was selflessly surrendering back the final spot on the podium to his Mercedes team-mate Valtteri Bottas.

Bottas had earlier been ordered aside by Mercedes so Hamilton could take the challenge to the Ferrari duo of Vettel and Kimi Raikkonen at a track where overtaking is notoriously difficult.

But Hamilton, who said he would give the place back to team-mate Bottas should he fail in his pursuit of the Ferrari duo, remained true to his word, and pulled aside on the final corner of the final lap.

After moving seven seconds clear of Bottas, and with an eye on the championship, Hamilton might have been forgiven for holding position.

However, the 32-year-old, unlike many before him, has not been known for diverting to the dark arts in his decade-long career, and he was not ready to start here.

Instead Hamilton, who was racing in front of his father Anthony for the first time in nearly four years, vowed to win this year’s championship battle the right way.

He would have been 11 points behind Vettel had he remained in third. His glowing sporting gesture, however, means he will now head into the sport’s summer shutdown 14 points adrift of his rival.

“The mind is more cut-throat and every point counts, and it’s do-or-die,” Hamilton said. “The heart told me that the right thing to do was to let Valtteri past.

“I want to win the championship the right way, and I don’t know whether that will come back to bite me on the backside or not.

“But I said at the beginning of the year I want to win it the right way, and I do think today was the right way to do things.

“It hopefully shows that I am a man of my word, and also that I am a team player.”

Ferrari, as they historically do, have thrown their completing backing behind one driver. Vettel is their main man, but Mercedes, much like their lead driver, oppose such preferential treatment.

It is a tactic which they readily admit could thwart Hamilton in his quest to become the first British grand prix driver to win four titles.

“It cost us three points and it could cost us the championship and we are perfectly conscious of that,” Hamilton’s Mercedes boss Toto Wolff added. “Saying I wouldn’t regret the decision would be very naive.

“The truth is that if you miss out on the title by three points everybody would say it is because of Budapest and I would be the first one to shoot myself in the knee.

“But standing by your values is what is going to make us win more championships. We don’t drive in circles because we enjoy it so much. We drive in circles because we hope that it promotes our brand and makes us sell cars.

“The purpose of us being here is doing the right things and winning in the right way. Sometimes doing it the right way and standing by your values is f****** tough and it was today, believe me. I feel crap.”

After the race, Bottas said: “Really thanks to Lewis to keep the promise and let me by after I gave him the shot to get past the Ferraris.

“When the gap was big I knew it could be a problem, but in the end I want to thank the team.”

After winning his first race since May’s Monaco Grand Prix, Vettel added: “I’m over the moon. It was a really difficult race.

“I really had to stay focused the whole race. I was hoping for a couple of laps to breathe but it didn’t come.”