"What Liverpool do in this moment is amazing," Mbappe told BBC Sport.
"They're like a machine, they've found a rhythm and are like 'we play again, we play again'.
"They've lost zero games. When you watch you think everything's easy but that's not easy. The guys are focused, they play games every three days and they win, they win, they win.
"Now the problem is that everybody watches Liverpool, and everybody watches what we can do against them, so now they have to show they are strong again but it's a very good team with a very good manager."