German luxury brands are by now experts at slithering their tendrils into every market segment under the sun, and they even concoct new ones when there’s opportunity. Once Mercedes took the standard E-Class sedan and morphed it into the swoopy, sexy four-door CLS in 2004, the floodgates were open. It was only a matter of time, then, before BMW belched out the aesthetically questionable BMW X6 crossover as a sporty (and less practical) alternative to the X5 in 2008. So now that sporty, four-door, executive-luxury Porsche Panamera is in its second generation, you better believe Mercedes is throwing its feathered hat into the ring.
This is a companion discussion topic for the original entry at https://www.hagerty.com/articles-videos/articles/2018/09/25/2019-mercedes-amg-gt-4-door-test-drive