800 Horsepower AMG GT73 4-Door Sounds Menacing

Spy shots of the GT73have provided some insight into the new car but seeing it in motion around the world-famous Nurburgring is far more illuminating. Adding a PHEV system to the AMG GT 4-Door is a great way to make the car faster without disrupting the sound of the 4.0-liter V8. AMG already managed to make a turbocharged engine sound better than most of its competitors, and the electric power won't take anything away from that awesome exhaust note (as evidenced in the video).

With traction from a 4MATIC all-wheel-drive system and the instant torque of electric motors, the GT73 should comfortably exceed the GT63's 3.1-second 0-60 mph time. We expect the GT73 to break the three-second mark, making it one of the quickest sedans in the world.

The GT73 will heavily focus on performance, but the PHEV system will also provide the car with a few miles of electric-only driving, improving the everyday drivability. In GT63 S form, the GT 4-Door achieves pretty abysmal fuel economy ratings of 15/20/17 mpg city/highway/combined. Perhaps with the addition of electrification, the car will achieve maximum performance and maximum efficiency.