It has been three seasons of Max Verstappen and Red Bull dominance since, and Hamilton will move to Ferrari in 2025 in an attempt to claim an eighth title before his days in the sport are over.
There is some suspicion that Mercedes hasn't necessarily been the problem in 2024 though, with Hamilton failing to beat his team-mate George Russell so far this season, driving what is, for all intents and purposes, the same car.
Mercedes reserve driver Frederik Vesti appeared on the latest edition of the F1 Nation podcast, and made it abundantly clear that the car, not the driver, is to blame.
"By fixing one problem you might introduce another one," said the Dane. "It can happen. I'm not entirely sure that's what's happened but for sure it's a problem with the car and it needs to improve and obviously both the race team and the drivers are chasing that lap time.
"Mistakes like Lewis made in quali [in China] - that happens when the car is not fast enough, cos you need to overdrive, you need to try and squeeze everything out of it to maximise the lap and that can be a problem for a driver."
A host of drivers have been linked with replacing Hamilton at Mercedes, from former champion Sebastian Vettel to the man he will succeed at Ferrari, Carlos Sainz.