The City boss has set extraordinarily high standards for himself having previously guided Barcelona to victory in the competition twice.
In comparison to that his spell in charge of Bayern Munich, where he was a three-time losing semi-finalist, is generally regarded as a disappointment, despite winning three Bundesliga titles and two German Cups.
Already at City, Guardiola has won the Premier League by a record margin and the League Cup twice, but he expects Europe to be the barometer of whether his reign is a success or failure.
He said: “I was judged in Munich in that way so I will be judged here as well. My period in Munich was not good for most people because we didn’t get one final. We got semi-finals but we didn’t get a final and we were judged.
“So, I’m a lucky guy. My standards are high. I have to reach it.”