ROME - Bayern Munich coach Pep Guardiola, never easy to please, said after his team's 7-1 demolition of AS Roma on Tuesday that the Bundesliga champions can still do better.

"We have a few things to improve and one of them is that we gave Roma too many chances at the start of the second half," he said.

Guardiola recognised that the game was atypical after Bayern scored five goals in the first 35 minutes on their way to their record European away win, which left them top of Group E with maximum points.

"This game is an exception, an incident," he said. "It's not the difference between the two teams, we will see that in two weeks.

"We got a quick goal and that relaxed us, then we got another. Rome are a team who always play well, but we were very aggressive, made the right decisions and found space."

His opposite number Rudi Garcia took responsibility for the disaster.

"It was a technical collapse, not a mental one," said the Frenchman.

"The first person to make a mistake was myself. I got the strategy wrong."