Draxler talks up Mbappe's speed.
The 19-year-old attacker has already registered 10 goals in seven games this season for the Ligue 1 champions, including the four goals he scored against Lyon on Sunday.
"In my opinion, you don't have to say more about this boy. He is a phenomenon," the Germany international said on Tuesday as Goal quoted.
"He's got so much speed and I guess there are not many players with speed like this in world football.
"He's so dangerous in front of goal and I guess everybody's glad that he is part of our team."
When asked what he could learn from the France international, Draxler said: "I wished I would be as fast as he is, but I'm not."
PSG have an eight-point lead at the top of the Ligue 1 table, after a record-breaking start to the campaign, winning nine matches on the trot.