2013 Mercedes-Benz GL 63 AMG engine sound and 0-100kmh. Head over to for .\rbr\rbrThe 2013 Mercedes-Benz GL63 AMG earns its performance badge with its twin-turbo 5.5-liter V-8 boasting 550 horsepower and a 4.8-second zero-to-60 time.\rbr\rbrThe 2013 Mercedes-Benz GL63 AMG earns its performance badge with its twin-turbo 5.5-liter V-8 boasting 550 horsepower and a 4.8-second zero-to-60 time.\rbr\rbrThe 2013 Mercedes-Benz GL63 AMG earns its performance badge with its twin-turbo 5.5-liter V-8 boasting 550 horsepower and a 4.8-second zero-to-60 time.