Marquez, who will depart Honda for the Gresini Ducati team in 2024, made the remarks in the run-up to this weekend's Australian Grand Prix at Phillip Island, the scene of his only podium finish of the 2022 season.
Despite Phillip Island's reputation as a track where the rider makes more of the difference than the machinery, six-time premier class champion Marquez insists he is not at a level that would allow him to realistically harbour ambitions of winning.
He was similarly negative about his prospects of challenging for what would be a first grand prix victory since the 2021 Emilia Romagna GP at the remaining four venues on the 2023 schedule.
"To win this year will be difficult," replied Marquez when asked if he felt Phillip Island offered his last good opportunity to claim a victory aboard the RC213V.
"We cannot approach any race thinking about winning it because we are far. We are not one, two, three seconds behind the winner, we are seven or 10 seconds in our best race.
"We cannot think about winning here, Buriram or Valencia, which are the three best tracks [of the remaining five].
"In Malaysia and Qatar we will suffer a lot; these [other] three tracks we will suffer a bit less, but not so much less that we can think about the victory."
Source: Autosport