The English Premier League champions won 1-0 at Newcastle United through a superbly struck volley by skipper Patrick Vieira.
City dominated the early exchanges, pinning Arsenal back, but were stopped in their tracks when Aubameyang produced a neat finish in the 19th minute following a flowing end-to-end move.
Manchester City could have striker Sergio Aguero available for Monday's Premier League clash with Arsenal after the Argentine returned to full training following a heel injury.
A 1-1 draw at Charlton Athletic sent Arsenal back to the top of the premier league.
If there is one thing that still riles Manchester City manager Pep Guardiola, it is the suggestion that his English Premier League success is down to money. After City were cleared of breaking UEFA's Financial Fair Play rules by the Court of Arbitration for Sport, which overturned the club's two-year European ban, the Spaniard was in a fiery mood as he railed against the idea that cash was behind the club's two Premier League titles.
Arsenal's Premier League hopes ended on Sunday when Tamir Cohen scored a last-minute header to give Bolton Wanderers a 2-1 victory that left them nine points behind Manchester United with four games to play.
Images from Saturday's English Premier League matches.
Fenerbahce have opened transfer talks with Manchester United over signing Netherlands striker Robin van Persie, the Turkish club said on Thursday.
Manchester City trimmed Manchester United's Premier League lead to 12 points after Carlos Tevez pounced to earn the champions a 1-0 victory at struggling Aston Villa on Monday.
Eddie Howe's side were ruthless in boosting their Champions League qualification hopes while 19th-placed Leicester became the first side in English Football League history to suffer eight successive home league defeats without scoring.
Arsenal strode into the New Year with their lead at the top of the English Premier League intact after a 2-0 victory over West Ham United.
Images from Saturday's action in the Premier League.
They have games against Blackburn Rovers and Middlesbrough respectively on Saturday.
Manchester United striker Robin van Persie will be treated with respect on his return to Arsenal, his former manager Arsene Wenger said on Thursday.
Manchester United breezed into the next round with a 6-1 aggregate win over Club Brugge
The top three places in the Premier League table look secure for Liverpool, Manchester City and Leicester City, but the fourth spot, currently occupied by Chelsea, remains tantalisingly within reach for several clubs including Carlo Ancelotti's Everton and Ole Gunnar Solskjaer's United.
A controversial freekick by Ryan Giggs gave Manchester United a 1-0 win over Lille and sparked a near-walkout by the French side in the first leg of their Champions League first knockout round tie.
Bukayo Saka scored either side of halftime as Arsenal crushed second-bottom Burnley 5-0.
Premier league Leaders Manchester City piled the pressure on Manchester United with a 2-0 victory over Bolton Wanderers on Saturday to move five points clear of their neighbours.
Arsenal proved they are far from a spent force in the Premier League on Saturday with a 2-1 win over champions Manchester United at the Emirates.
They recovered from an own goal to beat Manchester City.
Lessons learned in countless European campaigns will ensure Manchester United attack Arsenal the right way in Tuesday's Champions League semi-final second leg, their manager Alex Ferguson said on Monday.
Arsenal's Premier League title hopes suffered another blow when they were held to a 3-3 draw by Tottenham Hotspur in a pulsating north London derby on Wednesday.
Arsene Wenger can be excused a little smugness as he prepares his Arsenal side for Wednesday's Champions League quarter-final second leg at home to Villarreal as a bleak-looking season has suddenly burst into bloom. Last week's 1-1 draw in Spain makes Arsenal favourites to progress to a semi-final against either holders Manchester United or Porto while on Saturday they face Chelsea in the last four of the FA Cup at Wembley.
Arsenal's Premier League title hopes suffered a crushing blow when they conceded a last-minute goal to lose 2-1 at Bolton Wanderers on Sunday.
Manchester United and Tottenham Hotspur built hefty leads with emphatic away wins in their Europa League last 32 first-leg matches but AC Milan were held to a 2-2 draw at Red Star Belgrade as the competition resumed on Thursday.
Arsenal moved on to 77 points, 11 behind newly crowned champions Chelsea but four clear of Manchester United.
Chelsea, needing victory to keep the title race alive, could only scrape a 1-1 draw at Arsenal on Sunday.
Arsenal kick-started their Premier League season at the expense of Liverpool with new signings Lukas Podolski and Santi Cazorla both opening their accounts in a comfortable 2-0 win at Anfield.
Leaders Manchester United suffered their first Premier League defeat of the season on Saturday as they went down 2-1 at bottom club Wolverhampton Wanderers.
Ronaldo's 62nd minute strike was his 17th league goal this season
Arsenal will host Newcastle United in the outstanding League Cup third-round tie after the draw was made on Saturday.
'Now even winning our games does not guarantee us to be in the Champions League, that is what we have to achieve'
Barcelona signed Arsenal's Belgium international defender Thomas Vermaelen on a five-year contract on Sunday.
The top two teams in the EPL will battle for supremacy at the Emirates Stadium on Saturday.
