2019 Mercedes-AMG GT Four-Door Coupe spotted testing at the Golden Arches

The Mercedes-AMG GT sedan won't arrive on store shelves until early 2019, but it's been spotted testing in the American Southwest by an eagle-eyed Autoweek reader. Billed by Mercedes as its first four-door sports car, the AMG GT Four-Door Coupe, as it will be formally known (because everything is a coupe these days), will offer a heady choice of inline-six and turbocharged V8 engines when it lands next year.