Aguero scored his 178th goal in the 4-2 win over Serie A leaders Napoli to become the club's record all-time goal scorer -- breaking Eric Brook's 78-year record.

As well as advancing to the knockout stages with a 100 percent record, City are five points clear at the top of the Premier League, and Aguero told reporters after breaking the record: "No, there's no limit.

"For me, every game is important. Obviously, when I score a goal, I'm very happy but above all a player is happy if his team wins.

"The limit is to keep going in this way and if there are more goals, all the better, but the important thing is to keep going in this way that I think is a good level."

He said the Champions League is "not easy" but added: "I hope. I think it was a good step for the future and I hope that we can go as far as possible."

Aguero, 29, has won two Premier League titles as well as three domestic cup competitions since he moved to City from Atletico Madrid in July 2011.

But the striker believes the current squad could be the best during his time at the Etihad Stadium although he says they must back that up with silverware.

"There's still a long way to go. Individually and collectively I think we've started very well, and we have to continue like that because, as we all know, England has a lot of matches and we have to be in good physical shape for what is to come," he added.

"I just have to keep playing the same way, and I don't know. It depends on how many years City play this way and keep trying to score goals, but the most important thing is to win titles.

"The squad for me every year is good, but I know this year we are very good because the new players have come and the new manager. I think this squad is impressive. I am happy but for me every year the squad is good."

Aguero won the Europa League with Atletico in 2010 but his best campaign in Europe with City so far was the run to the semifinals of the Champions League in 2016.

However, the victory at Napoli, who had previously never lost at home to a Premier League side and had conceded just three goals at the Stadio San Paolo this season, was one of City's most impressive results ever in the competition.

"Napoli is a great team, it's just that we are also playing very well," Aguero said. "They try to play, and so do we. They win a lot because they are very good in front of goal.

"For me Napoli are one of the strongest rivals that I have faced, but I can only say that we are playing well and it's a big step for us."