Mercedes-AMG has unveiled the latest, and most potent yet variant of its AMG GT line-up at the Goodwood Festival of Speed over the weekend. Called the AMG GT R, the new car from Affalterbach is an intoxicating mix of the road-going GT and GT S coupes and the track-ready GT3.
The 4.0-litre twin-turbocharged V8 sits in the same mid-front position as in the rest of the GT family. But in the new spearhead, it churns out 577bhp and 700Nm of torque, which is a good 74 horses and 50Nm more than what the same block makes in the AMG GT S. The twin turbochargers, which are mounted inside in what is called a 'hot inside V' configuration, spool at 186,000rpm. Channeling all these wild horses onto the rear wheels is a seven-speed dual clutch transmission with a limited slip differential. These, along with the lighter construction, help the GT R tear away from 0-100kph in just 3.6 seconds on its way to a top speed of 318kph; a tenth of a second quicker acceleration and 8kph bump in top speed over the GT S. And this being a track-ready model, Mercedes-AMG has adopted dry sump lubrication to ensure constant oil supply even with heavy lateral forces from high-speed cornering. This has also allowed the engineers to install the V8 lower, thus moving the centre of gravity closer to the road.
But for potential GT R buyers who would mostly be driving it around racetracks, it’s the other mechanical bits that matter more than sheer performance figures. And the AMG GT R won’t disappoint them either. As a car dveloped exclusively around the Green Hell, as signified by the special AMG green hell magno paint, the GT R’s handling dynamics have been altered heavily by the boffins at Affalterbach. It sports active rear-wheel steering and active aerodynamics, along with a tweaked suspension. The double-wishbone coilover suspensions at the front and back use forged aluminium control arms, and feature motorsport-inspired uniball spherical bearings.
Aiding the power and handling credentials amply are the aero addenda including the gaping air ducts, manually adjustable rear wing, as well as active flaps behind the front fascia and underneath the car. Meanwhile stopping power comes from 390mm discs at the front, and 360mm ones at the rear, with a carbon ceramic setup with 402mm front discs offered as an option.
Order books are expected to open end of this year, with the car set to be launched early 2017.