Let's be honest, the Volkswagen Golf has evolved into a fine example of modern hatchbackery over the last 40 years. The Mark 7, by implication, should stand proudly at the top of the evolutionary scale as an example of the art and science of the modern "all things to all men" (and women, obviously) ideal of the everyday car.
Yet, and we're into First World Problem territory here, no creation of man is ever perfect. Compromises must be made in materials, design and execution/manufacture which result in irritations for the end user. The Golf is a fine car, devoid of some of the compromises which bespoil lesser offerings from other manufacturers, yet my experience of Mark 6 and Mark 7 examples means that I can point to some examples of shortcomings which, while they don't exactly spoil the ownership experience still irritate me.
The first is the car's propensity to become filthy at the back after being driven in anything less than perfectly dry conditions. This is the result of the shape of the rear of the car creating a huge low-pressure area which sucks spray and road dirt passing under the car on to the rear hatch and window, something which is common to all of the Golfs that I have ever owned. VW will eventually work out that such a massive area of low aerodynamic pressure causes a huge amount of drag, which also results in fuel wastage.
The second is the door mirror housings which appear to have been designed to hold water, then release it slowly so that it dribbles down the doors. Just make some drain holes in the bottom of the mirror housings for heaven's sake!
That is all. For now.