Responsible for making up the majority of G-class sales in North America, the G63's exterior gains over the G500 shown in Detroit last month includes the GT R styled Panamericana grille, multi-beam LED headlights, redesigned front bumper with wider air intakes, more flared wheel arches, new rear bumper, red brake calipers with perforated discs and 22-inch alloy wheels.
Available as an option, the AMG Night Package adds tinted front and rear light clusters, indictors and rear as well as side windows, while the mirror caps, spare wheel cover, under guard and trim on the bumpers are finished in Obsidian Black. A choice of 21 or 22-inch matt black alloy wheels are also offered.
As with recent AMG models, the G63 will also be offered in Edition 1 guise which adds red striping on the mirrors, ten colour options of which five are the bespoke designo hues, and in the case of models fitted with the Night Package, gloss black insets and forged 22-inch matt black cross-spoke alloy wheels with red rim flanges.
Spotting the differences inside are a lot harder though, with Mercedes-AMG claiming that the G63 now features the flat-bottom AMG Performance steering wheel wrapped in Nappa leather, chrome diff-lock switches and the five mode (Slippery, Comfort, Sport, Sport+ and Individual) AMG Dynamic Select controller.
The aforementioned Edition 1 builds on this by adding red carbon fibre trim, Dinamica micro-fibre wrapped steering wheel with red stitching and 12 o'clock marking, red stitching on the dashboard and centre console, door panels and rear seats, and diamond pattern sport front seats with contrasting red stitching.
Like the standard G-class, the G63 has also been fettled underneath and apart from being wider and lighter, comes fitted as standard with the three mode (Comfort, Sport and Sport+) AMG Ride Control air suspension, in addition to the double wishbone front axle mounted directly to the frame and AMG speed-sensitive electromechanical power steering with two modes; Comfort and Sport.
Ground clearance is rated at the same 241 mm as the G500 and despite being mainly on-road focused, the G63 comes equipped with three off-road modes; Sand, Trail and Rock, better door cladding to avoid water seeping in when traversing water obstacles and off course, low range.
Probably one of the biggest changes comes underneath the bonnet where the long serving 5.5-litre bi-turbocharged V8 makes way for the same 4.0-litre bi-turbo V8 unit powering the G500, but tuned to produce 430 kW and 850 Nm of torque. Up 10 kW and 90 Nm on old motor, the new V8 is connected to a AMG tweaked version of the 9G-Tronic automatic gearbox, which apart from replacing the old 7G-Tronic 'box, also comes with four modes (Comfort, Sport, Sport+ and Manual) as standard.
Fitted with a performance optimised 4Matic all-wheel drive system, Mercedes-AMG claims that the G63 can go from 0-100 km/h in 4.5 seconds and reach a limited top speed of 220 km/h or 240 km/h with the optional AMG Driver's Package fitted.
No pricing has yet been announced with sales expected to start on March 18th, while market launch takes place in June.