Paris St Germain never had to find top gear as they cruised to a 2-0 victory against Toulouse, while Reims shocked Montpellier 3-1.
Javier Pastore's lobbed goal after a Marco Verratti through-ball gave the home side a half-time lead at the Parc des Princes.
And Zlatan Ibrahimovic ensured their second-half dominance was rewarded with a second goal, rounding off a wonderful counter-attack to seal the win.
The two goalscorers were both involved as PSG carved out the first chance of the game, Pastore freeing Ibrahimovic to dribble through the defence and get away a shot which was saved by the feet of Ali Ahamada.
Toulouse have started the season brightly themselves and the in-form Wissam Ben Yedder tried his luck from 20 yards, but keeper Salvatore Sirigu dived full-length to save.
But the hosts took the lead seven minutes before half-time as Verratti put Pastore in behind the defence and the midfielder calmly lobbed Ahamada.
Jeremy Menez had the chance to double their advantage five minutes after half-time when he was set up by Ibrahimovic, but his shot from a narrow angle was saved by Ahamada.
Pastore and Ibrahimovic linked up again two minutes later but the Sweden striker's 25-yard drive was also saved.
Ben Yedder was the only player carrying a serious attacking threat for Le Tefece, but he was again denied by Sirigu after being set up by Serge Aurier.
And they fell further behind when Ibrahimovic, not to be denied, rounded off a wonderful counter-attack involving Verratti, the impressive Pastore and Menez.
Defender Alex almost netted a late third from Nene's corner, but Etienne Capoue cleared the Brazilian's header off the line.
Montpellier's woeful start to the Ligue 1 season continued as the defending champions crashed to a 3-1 defeat at newly promoted Reims.
Diego Rigonato, Christopher Glombard and Gaetan Courtet were the scorers for the home side, with the only reply coming from the boot of Remy Cabella.
The result means Montpellier, who begin their Champions League campaign against Arsenal in midweek, have won just one of their opening five matches and sit on four points - three worse off than Friday night's opponents.