Lewis Hamilton claims he beat Sebastian Vettel in 2017 because his team had a fresher and better attitude.
Hamilton was pipped to top honours by Mercedes team-mate Nico Rosberg in 2016, a season that saw the team split down the middle by the warring pair.
But the Brit experienced none of those problems with Valtteri Bottas and took his fourth F1 World Drivers’ Championship with two races to spare.
“I would say I was more assured of myself this year,” Hamilton told Sky Sports.
“I think that comes from a lot of different things: getting older, confidence in your work ethic, relationships with the guys you’re working with.
“We had a bullet-proof plan and structure of how we were doing things, a new resurfaced positive energy in the team that hadn’t been there for a while.”
Mercedes boss Toto Wolff has urged Williams to hand their second seat to one of the up-and-coming stars of motor sport.
Williams are currently evaluating a number of options to accompany Lance Stroll for 2018 with Sergey Sirotkin favourite ahead of Robert Kubica and Daniil Kvyat.
But Wolff, who supplies Williams with their power units, believes there are other options for the Grove-based outfit.
“If I were Williams today I would be bold and would put a George Russell or a Lando Norris in the car or a [Charles] Leclerc,” Wolff told the BBC.
“One of these really bright talented kids who have won championships in the past to develop the next superstar.
“But having said that there is a financial reality they live in and they have to find the right compromise.”
Red Bull F1 chief Helmut Marko says he doesn’t have a senior driver in the team – unless one is faster than the other!
Max Verstappen has recently signed a new contract with Red Bull to keep him there until 2020.
But Daniel Ricciardo’s deal expires at the end of 2018 and the Australian is considering his options for the future.
However, Marko insists neither man has priority within the team.
“I didn’t favour [Max], but in qualifying he was most of the time faster,” Marko said.
“With seven DNFs his season was not a walk in the park and sometimes his morale was really down, but it was a steep learning process for him and he came out better than he was before. His two wins were the proof.
“We don’t have a number one. Both drivers are equally treated and it is up to them to define the pecking order. I will always love the faster one!”