The club record fee does not faze the 27-year-old and Guardiola proved a determining factor in his decision to leave Leicester City. Pep is committed to playing attacking football, which is ideal for me, and City's performances last season were outstanding.
He added: "I don't think much about this, the most important is I'm here, happy and starting a new challenge and a new life". Now I'm here now and I'm happy.
"It's a club which wants to win the Champions League".
'It's a club that wants to win this type of trophy, the Champions League is for big clubs and City is a big club'.More news: Flooding in Japan has killed more than 100
"It is the past, I am looking forward now".
Mahrez, who was pivotal to Leicester's extraordinary title win in 2016 contributing 17 goals, said the size of the fee does not bother him or put pressure on him.
He said: "That means a lot for me". England have been very good, they were unlucky last night, but have a lot of credit for what they've achieved, ' he said.
Mahrez said: "The prices have been very big in every country so it doesn't affect me".More news: Jean Michael Seri in London to seal Premier League transfer
Mahrez has been in demand since Leicester's run to Premier League glory in 2015-16 but he hopes the move has come at the right time in his career. It happened like this.
'If I moved sooner then maybe I wouldn't have been happy.
"They have everything they need to succeed in the Champions League and that's where I want to play". I didn't hesitate at all.
"After what they've done, of course it is fantastic work". I thought what City did past year was wonderful, it was unbelievable to break all those Premier League records, but I am confident about myself. They broke all the Premier League records which is unbelievable, but no I never thought about this.More news: New Giant Dinosaur Discovered That Rewrites Evolutionary History