After an initial try-out of the Ducati GP23 at Valencia last year, Marquez got his first proper opportunity to acclimatise to his new bike during a three-day test in Malaysia this week.
The Spaniard ended up sixth on the timesheets on the final day of the running, finishing just under six tenths off the pace of factory Ducati rider Francesco Bagnaia.
Having already completed 72 laps in the sweltering Malaysian heat on Wednesday, Marquez refused to back down on the last day of the test as he added a sprint race simulation to his run plan.
Speaking afterwards, Marquez admitted that he is some way off the pace of the leading riders, but wants to make sure he doesn't leave any opportunity to close the gap to the front.
"I was really on the limit," he said. "For that reason, I was [away for] longer in the break on the mid-day.
"But another sprint simulation was not on the plan after 72 laps yesterday. But I said, 'okay, I need to make the last effort'. I don't know if in the future I will arrive in the level of the top guys but I don't want to have the gap.
"[To] keep working is the key. I don't want to have that [comment], 'ah, you don't make that'. I will do and I will insist to try to do it.
He added: "We adjusted a few things on the bike and I also adjusted a few things on my riding style.
"The team also started to understand me better and then the time attack was better. Still half a second to the top guys. But they are super fast on the time attack."
Source: Autosport