City's superb start under Guardiola continued as they won their eighth successive game in all competitions - an unprecedented feat for the club at the beginning of a season - by thrashing Bournemouth 4-0 in the Premier League on Saturday.
Already they have scored 25 goals in the campaign and the manner of their play is earning widespread plaudits, but Guardiola will not allow his players to believe a game will be too easy.
"That is not going to happen when I am there," the Spaniard said. "And don't say it is too easy. I heard from years ago the Premier League is the toughest league and I am going to accept that.
"We have a lot of work (to do) and we are just in September. We have played absolutely nothing.
"Of course the most important things in our game were much better than in the Sunderland game, but that is what we have to do. Always for the next game we have to try to do it better than the game before."
The former Barcelona and Bayern Munich manager claims he does not pay too much attention to the praise coming his way as he is well aware of the setbacks than can lie ahead.
He said: "I am so happy but I have to tell you I am going to lose games. We won these five games in the Premier League and the people have very nice words, but we know what happens in our world.
"I have seen what happens when the trainer didn't win, they have been so critical and they didn't deserve that. It is better to stay back and don't read too much.
"I know we are going to lose games and it is important when that happens to be stable."
Source: PA