The Repsol Honda was third in the opening race in Qatar and won next time out in Texas before finishing runner-up to team-mate Dani Pedrosa last time out in Spain.
Marquez also ruffled the feathers of reigning champion Jorge Lorenzo as the pair collided near the end of the Jerez race.
But the Spaniard knows he will have his work cut out at Le Mans which will be a new circuit for him on a MotoGP bike.
Marquez said: "We go to Le Mans and again we arrive there starting from zero, as I haven't done any tests there.
"I'll do my best and I'll try to make the most of the situation. I hope it doesn't rain so we can prepare the bike on a dry track, this is very important to find the right set-up.
"I'm very happy at the moment but we have to keep our feet on the ground as the coming circuits are new for me in MotoGP.
"A huge part of our success in this first part of the season is down to the help that Honda and the team have given me and it has helped my riding a lot."
Pedrosa is keen to get back into action at Le Mans after winning in Jerez to lie second behind Marquez in the standings and ahead of the factory Yamaha of Lorenzo.
Pedrosa said: "After a fantastic weekend in Jerez and a productive test on the Monday, I'm looking forward to going to Le Mans.
"I've had good results there in the past and I enjoy the circuit, so I'm hoping that the bike works well there.
"Practice management in Le Mans can sometimes be difficult and complicated due to the weather but I'm finding my comfort again on the bike and I'm working well with the team. I will go to France and aim to use all of my experience and remain focused for the whole weekend."