Snatching five wins from five matches and tallying 17 goals into the season, PSG sat atop the league table, expecting much more challenge from their duel against Premier League side Liverpool in next week's UEFA Champions League.
The 45-year-old has since set a new club record by winning each of his first six competitive matches in charge of the Ligue 1 champions, the last of which being a 4-0 victory over Saint-Etienne at the Parc des Princes on Friday.
"I said before the game that we would have to be at 110 per cent to get a result in Paris", he told reporters.
"It's an important test for us, not decisive but it's good to start with a complicated game".
Mbappe was absent as he began a three-match ban handed down following his red card in the win at Nimes just before the global break, and Neymar sat alongside him in the crowd, rested after playing for Brazil in a friendly in the United States in midweek.
Neymar was in the stands as PSG won 4-0, thanks to goals from Julian Draxler, Edinson Cavani (penalty), Angel Di Maria and Moussa Diaby.
However, there is little doubt that PSG will face a far tougher examination at Anfield in their opening Champions League group outing than they did here against Saint-Etienne.
"I know 10, not yet the 11th and I do not know my game system", he explained.
The game plan was to play low and counter in the first half.
"We knew PSG were stronger than us but four goals are expensive".
The German head coach told the club's official website: "I'm very happy with this victory, our sixth in a row since the start of the season". Julian managed to score a great goal, because my pass was not that great - it was really impressive.
"If we do not hurt PSG when they are in doubt, it's very hard".
Both Neymar and Mbappe will see themselves as heirs to the throne of Lionel Messi and Cristiano Ronaldo as the world's best player.