But while City failed to seal victory against Crystal Palace on Sunday, a 0-0 draw meant that they matched their neighbours' feat in building the biggest New Year lead in history.
Pep Guardiola's men came up against strong resistance at Selhurst Park, and were fortunate not to suffer their first defeat of the season.
Goalkeeper Ederson came to the rescue with a late penalty save, while injuries to Gabriel Jesus and Kevin De Bruyne ensured a rather anxious end to the year for the table-toppers.
The draw, however, was a rare blip in what has been a fantastic start to the current campaign.
City have won 19 games and drawn just twice this season, smashing the record for consecutive wins which stays at 18 in the process, and it would take a remarkable collapse for them to fail to win the title.