I had to get a larger car because of a growing family. Owned the Gl450 which is a great suv. Had some electrical issues but that seems to come with the territory of a Benz. The new navigator is impressive. Looks are great. Drives like a much smaller suv. Interior is very upscale and seats super comfortable. We love it as a family. Roomy and great ride. It?s only been 2 weeks so no answer in reliability. But they pickup car at home and give a loaner so it?s a low stress issue.
I have had at least six 4x4 Navigators, latest is 2018, all two year leases. Extremely reliable and capable. Safe! A great road machine. Tightest turning radius in the industry. Gets in and out of anywhere easily. Great features and comfortable.