The 28-year-old joined the Silver Arrows from McLaren during the off-season to end a five-year stay with his former team that included his 2008 world title triumph.
However, Hamilton admits that he is already feeling at home in his new surroundings.
"Normally when you go to a new team it takes a while to get settled in, but I'm working as hard as I can to get settled in," said Hamilton.
"It just takes time and as time goes on I will get more comfortable.
"I'm comfortable in the car. We've definitely made some good steps forward, but we have a lot of work still to do."
Hamilton will makes his Mercedes debut in the Australian Grand Prix on Sunday.