Saturday's 2-1 win over West Ham means City have now scored in 48 consecutive home games.
It is a remarkable feat and one which deserves due recognition.
The man Mancini's team have eclipsed, Scot Peter Hodge, was responsible for steering City out of English football's second tier in 1928 and into third spot in the top flight two years later.
It is worth noting only twice prior to that had City done any better, and at that point had not won the first of their three league championships to date.
Mancini is obviously being measured by an altogether different barometer.
So, the record was dismissed and victory accepted with some regret, even though it strengthened City's grip on a top-two finish, a feat the club have managed on only seven occasions in their entire history.
"Records only matter when you win a trophy," said Mancini. "With this one we do nothing.
"Our problem this year has been that we didn't score enough to win the title.
"Against West Ham we deserved to score four or five goals.
"This is my frustration for the season. We had chances to win at Tottenham last week and lost. And against West Ham we didn't score enough."
Sir Alex Ferguson reached a similar conclusion last season and went out and bought Robin van Persie, whom Mancini remains convinced he could have signed had the Blues hierarchy moved quickly enough.
Of all the names linked with City over the past months, Napoli's Edinson Cavani is the one that refuses to go away.
Yet the addition of another star striker in itself does not answer City's problems.
Although it was not one of their better displays, the Blues' goals against West Ham had the mark of class that has been stamped over most of their recent performances.
The involvement of Yaya Toure, David Silva and Samir Nasri in Sergio Aguero's opener was wonderful. Toure's stunning second, as skipper Vincent Kompany noted, will be replayed worldwide.
What City need is someone to pick up the slack when the main men are not firing. It is in that regard they have not been up to scratch.
Once a place in next season's Champions League is secure, Mancini may wish to use some of his fringe men to work out whether they are actually good enough.
Before that though, there is the little matter of a trip to Swansea and an FA Cup final to think about.
"Swansea will be important because we need to get three points," said Mancini.
"It will be difficult but if we do then we can prepare well for the final."
It was not a day that will linger long in Hammers boss Sam Allardyce's memory.
He was hoping for far more urgency from his players in the first half, and when Andy Carroll profited from the back spasm Mancini insists Joe Hart will have recovered from by Monday, it was much too late to mean anything.
It did however extend Carroll's recent good form.
And though there are plenty of hoops to go through before the current loan deal can be turned into a permanent transfer from Liverpool, there are clear signs the union would suit club and player, who has now scored seven times for the Hammers, and four in his last five games.
"We need to get a few more goals on the road, that is obvious now," said Allardyce, whose side have managed just 11 goals away from Upton Park, the joint worst tally in the top flight.
"We will address that in summer.
"By the start of next season hopefully we can find some better players and do better than we have."