Today took my 2019 GLA in for the B service. They gave me a 2021 GLA as a loaner while they serviced my 2019. Found 2021 be a very different car. There is more glass as the windshield is not laid back as much, the side windows in the front seat seem larger. The dash is completely new and has many options of what you can display. Think it could take some time to learn how to use the touch screen and the button on the steering wheel and the touchpad in the console to select the option you can view on the displays. What you can see on the display screens can be changed and swapped around. Seats were seen a little more firm. Overall felt like it was a little larger. The hood drops off very fast that looking out the windows you do not see much of the hood or if any. After having a 2016 GLA and now a 2019 GLA have mixed feeling for the new resigned GLA. Most likely will be getting the new platform in the next year, either a late 2021 or very early 2022.