Phil Foden scored his first Manchester City goal with Gabriel Jesus and Riyad Mahrez on target either side of half-time as the holders eased into the EFL Cup last 16 with a 3-0 victory at Oxford United.
City named a strong side for the third-round clash including captain Vincent Kompany and Nicolas Otamendi in defence, while John Stones operated in an unfamiliar role in front of the back line and there were starts for youngsters Foden and Brahim Diaz.
Brazil striker Jesus recorded his second of the season with a close-range header, and thereafter City's progression was not in doubt, with Foden brilliantly setting up Mahrez for a late second.
And teenager Foden opened his account for the club with an arrowed finish in added time to make a case for more regular selection under Pep Guardiola this season.
Jesus thought he had struck in the 19th minute but the offside flag cut short his celebrations, although the striker would not be denied by the officials when he opened the scoring.
After referee Roger East played a good advantage, Foden swung a superb crossfield pass out to Diaz, whose shot rebounded up for Jesus to stoop and head home from a few yards out.
Danilo, making his first appearance of the season, rifled a long-range drive narrowly wide of the angle in the 50th minute as City sought a second goal.
Foden missed a sitter from a Danilo cross but made amends with a brilliant pass that sent Mahrez clear on the break to score with a powerful strike with 12 minutes left.
And Foden ensured City's passage in the 92nd minute, rounding off a star performance in style with the Premier League champions rarely needing to get out of first gear to start their EFL Cup defence with a win.
What does it mean: City challenging on four fronts
City were not expected to be stretched against League One opposition and the match went mostly to plan, with debutant teenage goalkeeper Arijanet Muric mostly untested. Foden starred, Diaz was involved in the opening goal and Oleksandr Zinchenko was bright at left-back. Guardiola has plenty of young talent and the EFL Cup may be the ideal proving ground if City are to target a quadruple.
Foden meets expectations
An awful lot is demanded of Foden and it is easy to forget that although Guardiola has touted him for a senior England call-up, he is only 18. This was the sort of match a talent as prodigious as Foden should have dominated and the wonderful pass to fellow youngster Diaz that created the opening goal showed what he could do. Foden occasionally operated on the fringes of the contest, but another superb ball created the second goal for Mahrez and he got the goal he deserved at the end. His ability is not in doubt.
Nervy moments for Muric
Recalled from NAC Breda after Claudio Bravo's injury, this was a first City appearance for goalkeeper Muric - and it showed. He appeared unsettled when Oxford delivered long throws into his box and with the third-tier side unable to create chances he could not build any confidence by making saves. Pre-match talk of Muric being Ederson mk II may be premature.
1 - Phil Foden (18 years, 120 days) is the first player born since the turn of the millennium to score a competitive goal for Manchester City in any competition. Star. pic.twitter.com/8A3W8S07yD— OptaJoe (@OptaJoe) September 25, 2018
City host Brighton and Hove Albion in the Premier League on Saturday, while it is back to League One action for Oxford, who are away to AFC Wimbledon on the same day.
|Rodgers inspires late Packers comeback|
|Brewers blank Dodgers to take 2-1 NLCS lead|
|Cavaliers, Nance agree to four-year extension|
|Ramos wants Spain to believe in Luis Enrique´s team|
|De Laurentiis: I´ve spoken to Genoa and agent about Piatek|
|Kaka tips bright future for Paqueta after Milan agreement|
|Suns star Booker set to return for season opener|
|Warriors coach Kerr not expecting fast start from NBA champs|
|Fultz to start for 76ers as Brown eyes NBA Finals|
|Maltese champions Valletta want Usain Bolt|
|It would have been normal to kill them! Luis Enrique slams abysmal Spain|
|Seahawks, Trail Blazers owner Paul Allen dies aged 65|
|Red Sox ace Sale released from hospital, still set for game five|
|Beer-throwing fan banned by Patriots|
|Southgate lauds ´tremendous´ attackers after famous Spain win|
|Djokovic closing in on summit as he scales new heights|
|Monaco the natural move for Henry - Martinez|
|Ending England drought a ´beautiful feeling´ – Sterling|
|Halep to face Pavlyuchenkova in Moscow comeback|
|NBA 2018-19: Five non-LeBron James storylines to follow|
|Spain 2 England 3: Kane inspires Three Lions as Sterling ends drought in style|
|Bosnia-Herzegovina 2 Northern Ireland 0: Dzeko double leaves O´Neill´s side on the brink|
|Mannarino stops the rot in Moscow|
|Neymar pleased Brazil will not face Messi in Argentina clash|
|Buccaneers fire defensive coordinator Mike Smith after loss to Falcons|
|´Surprised´ Deschamps accepts he could´ve made more effort with Koscielny|
|Kuwait 0 Australia 4: Socceroos deliver win for new coach Arnold|
|Van Dijk fit for Liverpool return - Koeman|
|NBA 2018-19: Eastern Conference predictions|
|NBA 2018-19: Five rookies to watch|
|Denly replaces injured Dawson in England ODI squad|
|Low confirms under-fire Neuer to start against France|
|NBA 2018-19: Western Conference predictions|
|Bolt offered two-year deal by European club, says agent|
|NBA 2018-19: LeBron the Laker - what it means|
|Griezmann ahead of Mbappe for Ballon d´Or - Modric|
|Billy Vunipola ruled out with fractured arm|
|Get the chequebook out! - Mayweather talks up potential Khabib clash|
|Amla ruled out of Australia tour|
|Class act Hamilton more complete than ever - Wolff|
|NBA 2018-19: It´s a big season for - Ball, Kawhi, Carmelo, Love & Cousins|
|Bellew: I have no fear of Usyk|
|Birthday boy Ozil is the most creative player in Europe|
|CSA reveals De Villiers and Rabada involved in Mzansi Super League|
|FA condemns England supporters involved in trouble in Seville|
|Gascoigne hits back over Scottish Hall of Fame snub|
|NBA 2018-19: LeBron closing in on Jordan, Curry chasing Miller and Allen|
|Ter Stegen should start ahead of Neuer for Germany – Matthaus|
|England´s Sterling impressed by Sancho´s work ethic|
|Vandoorne seals switch to Formula E|
|Halep to end 2018 as world number one|
|Sri Lanka´s Jayasuriya charged by ICC with breaching anti-corruption code|
|Vermaelen out for six weeks with hamstring injury|
|LeBron and Irving did not fall out, says ex-Cavs trainer|
|Ramsey out of Wales´ clash with Republic of Ireland|
|Bolt angry with drugs test|
|Bad luck is not a coincidence – Kimmich concerned by Germany form|
|Mahomes: Chiefs need to win like Brady and the Patriots|
|Schuster warns Real Madrid not to panic-buy striker in January|
|We´re here to win! - Paine not happy celebrating a draw|
|Injured Thauvin out of Germany clash|
|Southgate hits out at early Premier League start|
|Modric to Inter talk is ´fantasy´, says Guardiola|
|Pats hand first loss to Chiefs after wild shoot-out|
|Cowboys, Ravens dominate as Pats beat Chiefs in NFL classic|
|Brady becomes first QB to 200 regular-season wins in NFL|
|Red Sox level series against Astros|
|Mbappe leaves red-faced Dembele on his backside|
|Red Sox ace Sale admitted to hospital with stomach illness|
|From UFC to NFL? McGregor throws pass for Cowboys|