It’s always fun to watch a car get strapped onto a dyno and watch it jerk about like a beast that’s itching to get out of its shackles. In some ways, it’s an appropriate metaphor to use, especially if the car in question is a 2016 Mercedes-AMG GT S. On its own, the AMG GT S is capable of producing 503 horsepower and 479 pound-feet of torque, allowing it to sprint from 0 to 60 mph in just 3.7 seconds to go with a top speed of 193 mph. Seems impressive, right?

But, those numbers come at the expense of not having a tuner like Hennessey in the picture. With the aftermarket company getting its hands on the AMG GT S, well, that’s what this video is for.

Check out the car trashing about as it’s being run on the dyno. It looks surreal, doesn’t it? That’s what dynos are for to begin with, and while we’re at it, listen to the roar of that 4.0-liter V-8 engine. If that doesn’t send a little chills down your spine, then I don’t know what it’s going to take.

The result of Hennessey’s dyno test on the AMG GT S was shown at the end of the video and the numbers speak for themselves. From the standard output of the Mercedes sports car, the American tuner was able to squeeze out an extra 50 horsepower and close to 100 pound-feet of torque, bringing the output to around 550 ponies and 566 pound-feet of torque.

The American tuner hasn’t announced the full details of its HPE600 program for the Mercedes-AMG GT S. But, with the dyno test seemingly out of the way, expect an announcement to arrive sooner than later.

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Kirby Garlitos
Automotive Aftermarket Expert - kirby@topspeed.com
Kirby’s first exposure into the world of automobiles happened when he caught Knight Rider on television as a five-year old boy. David Hasselhoff didn’t leave much of an impression on him (that happened later on in Baywatch), but KITT certainly did. To this day, Kirby remains convinced that he will one day own a car with the same ‘spirit’ as the original KITT (not the 2008 monstrosity). He doesn't know when that will be, but until then, he’s committed to expressing his love for KITT, and all cars for that matter, here at TopSpeed.  Read More
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