Paris Saint-Germain's Kylian Mbappe (front) prepares to shoot during the UEFA Champions League Group H soccer match between Paris Saint-Germain and Juventus at the Parc des Princes Stadium in Paris, France, Sept 6, 2022. (GAO JING / XINHUA)

PARIS – Kylian Mbappe played chief tormentor as Paris St Germain started their Champions League campaign by beating Juventus 2-1 at home on Tuesday, their first victory against the Italian side.

Mbappe opened the scoring with a stunning goal and added a second in the opening half before substitute Weston McKennie reduced the arrears after the break as the French champions' level went down a notch.

Juve had chances to equalize but keeper Gianluigi Donnarumma made several good saves to make up for a blunder for the visitors' goal, ensuring PSG beat the Italian side for the first time in nine meetings, having lost the last six.

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Christophe Galtier's team are level on three points in Group H with Benfica, who beat Maccabi Haifa 2-0.

"We had a great first half, with big moments. We scored two beautiful goals and played as a compact team," said Galtier, leaving his Juve counterpart Massimiliano Allegri with regrets.

"We were too timid in the first half and it's not easy to recover from such a start against such a top team," the Italian said

"We were too timid in the first half and it's not easy to recover from such a start against such a top team," the Italian said.

The heavy smoke from the pre-game flares and firecrackers was still in the air when PSG took the lead in stunning fashion, as Mbappe volleyed home from Neymar's brilliant flick over the Juve defence after five minutes.

Vitinha and Marco Verratti bossed the midfield, snuffing out counter-attacks as the home side made a strong start.

Juve struggled to handle PSG on the left flank but had a chance in the 18th minute when Donnarumma denied Arkadiusz Milik with a superb save.

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PSG, however, doubled their advantage four minutes later, with Mbappe finishing from just inside the area after a quick one-two with Achraf Hakimi for his eighth goal in his last seven Champions League matches.

Paris Saint-Germain's Kylian Mbappe (second right) celebrates his goal during the UEFA Champions League Group H soccer match between Paris Saint-Germain and Juventus at the Parc des Princes Stadium in Paris, France, Sept 6, 2022. (GAO JING / XINHUA)

In just 22 minutes, Juve had conceded as many goals as in their first five Serie A games.

The hosts soaked up some mild pressure from the Italian side before pressing forward again after the break with Neymar forcing Mattia Perin to a save in the 49th.

Lionel Messi then set up Mbappe down the right flank but the France forward, instead of sending the ball across to the unmarked Neymar, took his chance with a shot that went well wide.

What should have been a 3-0 turned into 2-1 when McKennie headed home from Filip Kostic's cross, benefiting from Donnarumma's ill-timed intervention, as the keeper came out but got nowhere near the ball, leaving the goal unguarded.

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The Italy international, however, pulled off a brilliant save shortly afterwards to deny Dusan Vlahovic and was at it again later to block Manuel Locatelli's attempt.