The only moment of note from a lacklustre West Brom came with Hal Robson-Kanu's late consolation.
With Champions League qualification still not secured either with City just three points ahead of Arsenal in fourth place, the Spaniard believes he would have been sacked if he was at his previous clubs.
Pablo Zabaleta arrived at Manchester City as a relative unknown but leaves as a legend. Seeing women cry on the videos means a lot.
"It was a ideal night, especially for Pablo". Maybe next season hopefully we can do better. The two quick goals really set them up. Dropping or drawing this game to the Baggies could cost them their UCL chances, so expect City to leave nothing on the field.
Although he didn't get on the scoresheet, the Argentinian had a hand in all of City's goals and Guardiola said he had done exactly what was required.
De Bruyne was the architect in chief for the home side.
He's been key to City winning two Premier League titles, two League Cups and an FA Cup - but Zabaleta has proven to be so much more than a brilliant footballer.
Jesus, with his sixth goal in seven league starts, and De Bruyne struck within two minutes of each other midway through the first half and Toure added the third just before the hour.
On Tuesday captain Vincent Kompany presented him with a shirt bearing the number 333, representing his City appearances.
A presentation took place on the pitch in which Zabaleta was shown video tributes and handed a lifetime City season ticket.
One manager who is departing their club is Walter Mazzarri, Guardiola's touchline opponent on Sunday afternoon. Not the only farewell?
After the game, Zabaleta received quite a lovely send off from the Citizens.
Toure, along with Jesus Navas, Gael Clichy, Bacary Sagna, Willy Caballero, and Tosin Adarabioyo, may find out only during the offseason.
Manchester City's Leroy Sane in action with West Bromwich Albion's Nacer Chadli at Etihad Stadium, Manchester on May 16, 2017.
But this kind of transfer rumour never disappears, and that's why when interviewed by Cadena Cope on Tuesday, the player was asked about Barcelona and Pep Guardiola.