We recently purchased our Volkswagen Beetle GLX having previously driven a GLS for only a few months. What a world of difference! The interior is much nicer (leather, etc) and car just feels “tighter.” The seats are very comfortable and come with individual heaters (not that we need them much in Florida). The controls are easy to use and there is plenty of headroom and legroom (I have to scoot the seat forward and I am 6’2”). The GLS had some “trim” problems (door latch, light bulbs, etc) but the GLX has none of that. Last but not least is the performance with the turbo. The car flat gets out of the hole when you want it to. Add to all that the fluorescent green color and you have one fun car.
The look and styling. The handling and acceleration. The quality of the interior trim panels and carpeting. The vanity lights in the visors.
More cup space would be a bonus. No car should ever be sold without a CD Changer (we had to install one). The paint on the top of the door panel lends itself to scratching - should be upholstered.