Hamilton fought from 10th place on the grid to win forward of championship rival Max Verstappen, however was positioned below investigation for a seatbelt infringement after taking the chequered flag.
Hamilton stopped by a marshal to take a Brazilian flag which he held aloft from the cockpit after which took with him onto the rostrum to pay tribute to the native followers.
However the stewards positioned Hamilton below investigation for breaching the Worldwide Sporting Code rule surrounding security belts, resulting in a post-race listening to.
It was introduced that Hamilton had been fined €5,000 for the incident, with an extra €20,000 suspended by way of to the top of 2022.
“The motive force of automobile 44, Lewis Hamilton, undid his seat belts on the in-lap on the finish of the race,” the bulletin from the FIA stewards reads.
“Whereas the Stewards are sympathetic to the need to rejoice, it’s basically unsafe to undo the seatbelts whereas the automobile is in movement. Gradual speeds in these automobiles are very quick for an unrestrained occupant.
“Additional, Method 1 drivers set the instance for junior classes. It’s important that junior class drivers study the significance of utilizing all the security units of the automobile always.”
Lewis Hamilton, Mercedes, 1st place, celebrates with a Brazilian flag in Parc Ferme
Photograph by: Andy Hone / Motorsport Images
It brings to an finish a turbulent weekend for Hamilton and Mercedes that noticed the seven-time world champion get excluded from qualifying on Friday over a technical infringement.
Hamilton’s DRS failed the post-session FIA checks, with Mercedes suspecting this was on account of a broken half that it ordinarily would have been in a position to repair below parc ferme circumstances had it been in a position to verify the rear wing.
It left Hamilton 20th on the grid for the Saturday dash race, however he recovered to complete fifth, that means he began the Sunday grand prix from 10th place after an engine penalty was utilized.
Hamilton then battled his strategy to victory after going wheel-to-wheel with title rival Verstappen, resulting in the duo going off-track collectively on lap 48 as Verstappen tried to defend.
The stewards famous the incident however opted in opposition to investigating, leaving Mercedes F1 team boss Toto Wolff bemused by a decision he called “laughable”.
With victory in Brazil, Hamilton now trails Verstappen by simply 14 factors heading to the Qatar Grand Prix subsequent weekend.