Pep Guardiola's side have accrued an incredible 198 points over the past two campaigns, winning two Premier League titles.
But Belgium international thinks it will be a tighter competition this season.
De Bruyne said: "We don't need to beat the last two seasons - maybe we can win this season with 85 points.
"It is not about improving, it is about staying consistent, trying to be there every game, trying to win every game.
"It is not always about doing better, because how can you do better sometimes?
"To win every year what we won the last two years is going to be pretty difficult but it is good to be there."