Arsenal defender Per Mertesacker says the Gunners are not getting carried away with their promising start to the Premier League season.

The North London outfit notched their fifth straight league win against Swansea on Saturday, ensuring they kept pace with table-toppers Manchester City.

"We haven't proved anything yet but what we have learned is to take it game by game," Mertesacker said.

"The last couple of years we have lost a few games here and there, especially away from home.

"But we take it really seriously because we can see there is not that much difference between the top and us.

"Last season I think it was 15 points at this stage and now it's completely different. It gives you a reason to be as efficient as we are at the minute."