World footballer of the year Ronaldo demonstrated his great abilities and was among the goalscorers as Genuine
obliterated the 2014 English Chief Alliance champions in a rankling first half execution before more than 99,000 fans at the tremendous stadium.
It was the MCG's greatest ever swarm for a football-just occasion.
The 10-time European champions delighted in the climate, opening up Man City with stunning touches, flicks and clinical completing for three objectives in the first half.
French striker Karim Benzema put the Spaniards ahead with a fabulous complete in the 21st moment.
Benzema snared in Gareth Parcel's traverse his left shoulder in a splendid bit of completing after a fine once-over the conservative by Daniel Carvajal.
Ronaldo jumped four minutes after the fact, getting a superb first touch to cut down German Toni Kroos' long go before jabbing home.
Britain goalkeeper Joe Hart was not able to keep the ball from step over the threshold of acceptability for a twofold Genuine sucker punch after piecemeal City shielding as Ronaldo excited the group his trademark objective festival.
It deteriorated for City when focal protector Pepe scored Genuine's third with an unmarked pounding header off Isco's corner minutes before half-time.
Somewhere down in first-half stoppage time City got a punishment for a Sergio Ramos hand-ball as he bumped with Sterling.
Manchester United target Ramos protested with Japanese arbitrator Hiroyuki Kimura that Sterling had taken care of the ball first.
Yaya Toure opened home the spot kick for City to trail 3-1 at the break.
Russian Denis Cherychev made in four when he cut home an Isco cross with 17 minutes left.
City's night was further soured when new marking Fabian Delph harmed his left hamstring and was carted away after only 18 minutes and was supplanted by Jesus Navas.
Chief Rafael Benitez rolled out four improvements at halftime bringing off Benzema, Luka Modric,Carvajal and Pepe, while Manuel Pellegrini left his Man City group unaltered.
Ronaldo, the world football's most generously compensated player, turned on his gathering traps for the thankful MCG swarm, with his brassy stepovers and flicks and was barely wide when he was discharged by Gareth Parcel just to put a daring endeavor simply wide.
Edin Dzeko, the subject of exchange theory, got his first keep running of the competition for City, going ahead in the 64th moment as Toure, Ronaldo and Ramos fell off in the meantime.
City's record marking Raheem Sterling had a calm night and was all around contained by Ramos before he was substituted halfway during that time half. (AFP)