First-half goals from David Silva and Sergio Aguero gave City an early lead, before Magpies centre-back Steven Taylor was given a straight red card for hitting out at the diminutive Argentine goalscorer just before the break.
The home side's dominance continued in the second period, with Yaya Toure marking his 100th Premier League appearance by curling a free kick past Tim Krul just after the restart, and substitute Samir Nasri completed the scoring with 15 minutes remaining.
Fernandinho, who arrived from Shakhtar Donetsk in the close-season, was handed a competitive City debut along with Spain international Jesus Navas. But Alvaro Negredo, who joined with Navas from Sevilla, was only named among the substitutes.
|By Wayne Veysey
Manchester City showed they will be a team to fear this season as they got the Manuel Pellegrini era off to an ominous start by swatting aside a hopelessly outclassed Newcastle United.
City were two goals ahead and in complete control even before Steven Taylor mindlessly got himself sent off on the cusp of half-time for cuffing Sergio Aguero around the head.
Newcastle, who seemed distracted by the late withdrawal of Arsenal target Yohan Cabaye, were reduced to damage limitation after the break as Yaya Toure’s unstoppable free kick and sub Samir Nasri’s smartly taken strike supplemented the early goals from David Silva and Sergio Aguero.
The early signs from this 90-minute masterclass are that City appear a more united and motivated side than the one that so feebly defended their title under Roberto Mancini last season.
City started the game with plenty of intent and the early pressure led to the breakthrough in just the sixth minute.
Silva played in Edin Dzeko to the left-hand side of the penalty area and his low cross was deflected straight into the path of the Spaniard, continuing his run into the box, who headed past the wrong-footed Krul.
Newcastle thought they had found a quick response when Hatem Ben Arfa jinked his way to the edge of the area before playing a sublime through-ball to Yoan Gouffran who fired beyond the reach of Joe Hart. Gouffran's celebrations, though, were curtailed by the offside flag.
City then had a huge shout for a penalty when Dzeko's perfectly weighted pass was collected by Toure deep in the box. He appeared to be tripped by Mathieu Debuchy but referee Andre Marriner waved away the protests.
In the 22nd minute, City did deservedly double their lead. Vincent Kompany supplied Dzeko and he showed great vision to play a nonchalant back-heel straight into Aguero's path. The Argentina international drove at Taylor onto his favoured right foot before firing expertly across Krul into the far corner.
Aguero then had a legitimate claim for a penalty when Taylor appeared to handle his strike in the box, but Marriner was unmoved. It was only a brief reprise for the Newcastle defender, though, whose evening was brought to a premature end moments later when he was shown a straight red card for striking the back of Aguero's head with his arm.
City picked up where they left off in the second half and Dzeko was again thwarted by Krul, who produced a superb athletic save to keep out the Bosnian's point-blank header.
But the third arrived in the 50th minute. Aguero won a free kick left of centre of the goal and Toure curled his effort into the top corner and past the despairing dive of Krul.
The one sour note for City came with 20 minutes remaining when captain Kompany was replaced by Javi Garcia after the centre-back had injured himself sliding for a challenge on Sammy Ameobi.
But it did not impact on City's fluency in attack and Nasri made it four when he pounced on a loose ball in the 75th minute before coolly slotting beyond Krul.
Negredo came on to replace Silva with 10 minutes remaining and had the ball in the net only to be ruled offside, but it made no difference as City secured three comfortable points.