Shutdown @ highway speeds
My 2016 GLC shut down on me, twice, while driving in the left lane at highway speeds of around 70mph. At first a pre-safe warning message flashes and then the car begins to steadily slow down. No response from driver inputs other than steering. The car will come to a complete stop in about 2-3 minutes. I was scared to death the second time because it happened on a mountain pass highway with no shoulder due to snow pile up. I had to cross over 2 lanes of traffic while traveling much slower than the surrounding cars. It was harrowing. I can't imagine how anyone would write software code that would allow the car to shut down. I'm tempted to contact the NTSB.
Anyway, MB dealer said, "yeah, we've heard of this happening" just bring it in and we'll take a look. Rather cavalier for a situation that nearly had me on the evening news in a very bad way.