Five years into its lifecycle, and the AMG GT sports car has grown into its own dedicated lineup that includes a convertible and the car you see here a sedan that Mercedes markets as a four-door ahem 4-door coupe. This specific model blends the sporty essence of the coupe with the comfort, practicality, and family friendliness of a traditional sedan. We got to spend an entire week with the AMG GT53 the middleman between the new GT43 and the GT63 (and GT63 S) to see just what its like to live with the sportiest four-door car Mercedes makes.