Sound insulation CLA coupe

[Keitay 0]

Hi all! Had my CLA for about a month now. Enjoying the ride but have recently noticed that I can actually hear the voices of people talking outside the car or grass cutting even when a couple of lanes away. I understand that the frameless windows don’t allow for great sound insulation in the first place but am just wondering if the above-mentioned is typical of the car? Thanks In advance!