I have had the GLA for 2 years now. The experience has been very good both with the car and dealership.
The styling could have been more angular and manly but that aside it has been a very competent all-rounder that is a hoot to drive on the highway yet city-friendly and very efficient on fuel.
As one of the latest-gen Mercedes cars, the cabin is futuristic and feels amazing every time you get into it. It's a car that is hard to find fault with. While it might not have features like ventilated and massage seats that I miss, what is there works very very well.
The car has been reliable till date and with a 8-year unlimited mileage warranty on the engine and gearbox you get some peace of mind. Service and maintenance is on the expensive side with annual service costing between 50-70k every time. You have to factor this in along with the expensive 50k+ annual insurance on the car when considering this car. Buying and owning a merc is far from cheap!