In the RB13, the 22-year-old clinched a stunning victory in Austria, scorched to a win in the wet in Germany, and passed Hamilton en route to his third triumph of the season in Brazil.
Max Verstappen drove a faultless drive but was powerless to prevent Lewis Hamilton from cruising to this 11th victory of a dominant 2019 campaign. Hamilton will be 36 in 2021, while Red Bull's Max Verstappen, also out of contract at the end of next year, is 12 years Hamilton's junior.
"He's good in battling, he's good in racing, so we are very happy with him".
With a record 413 points in the drivers' championship, Hamilton produced his most impressive season to date and has shown no signs of slowing down after 13 years in the sport. There were delays and stuff, so it was not great and we couldn't fix it, so we drove around the problem. "But it wouldn't have made any difference today (in terms) of winning the race".
Hamilton won the last round of the season in Abu Dhabi having already secured his sixth world championship.
"I don't want to make the mistake of underestimating Ferrari's potential".
"As a Team we want to move forward next year and fight for the title", said the Dutchman.
He can equal the German's record title tally next season and the lure of going beyond that in one of the Italian team's red cars could be too great to resist.
Following a post-race investigation, Ferrari were fined £43,000 after they declared an inaccurate reading in Leclerc's auto.
His Mercedes team-mate Valtteri Bottas was second, though he will start from the back due to a grid penalty.
Hamilton finished with 413 points with Bottas on 326, followed by Verstappen (278), Leclerc (264) and Vettel (240).
The third victor of Abu Dhabi Vettel, who will start with soft tires as opposed to the two Mercedes, Red Bulls and Leclerc, also had his opinion on the disappointing qualifying finish.
Ahead of the season-ending race in Abu Dhabi, Mattia Binotto openly discussed his happiness at the possible availability of Hamilton. "The reasons are clear, the lessons are clear and it's up to us to take them on board", said Vettel. But of course, I think it's only smart and wise for me to sit and think of what I want in the. if it is the last period or stage of my career. It would also give Hamilton his most competitive team-mate in recent years.
The Red Bull driver was complaining early in the race of issues with the torque delivery, as well as commenting on the engine braking performance on Sunday evening.
Perhaps the most startling revelation in Abu Dhabi was Toto Wolff's admission that he believes there is now a 25 per cent chance Hamilton will join Ferrari. He at least had the satisfaction of being both Scuderia Ferrari drivers in the final standings.
Leclerc finished a massive 43 seconds behind Hamilton but had built up just enough of a lead to hold off Bottas by.9 seconds.