I have it installed on a Mercedes Benz GLC300. It fits perfectly and you don't even know it's there. I had some issues with the unit but customer service was very responsive and resolved it quickly.
I was very satisfied with my first dashcam on my vehicle but it broke down due to an electronic radiator just above it. I contacted FITCAMX and had excellent contact with attentive people. I bought a cam again. Easy and quick installation. Discretion and efficiency. However, I remain convinced that additional ventilation would have been welcome.
I bought the camera while I was at USA and subsequently moved to my home country. I would say Fitcamx gave a wonderful post-sales support for International customers.