Spied by motor1.com spy photographers less than a day after the regular the GLS (main picture), the 63 betrays its identity courtesy of the GT R styled Panamericana grille, bigger alloy wheels and fatter tyres. No interior images have yet been revealed, but expect the regular GLS' to mirror that of S-class while the AMG will get its own range of unique touches.
While still decked out in significant layers of disguise and sporting oodles of pre-production bodywork, the 63's biggest change will come underneath the bonnet where the current 5.5-litre bi-turbo V8 will likely be replaced by the now ubiquitous 4.0-litre bi-turbo, which could produce as much as 441 kW versus the previous unit's 430 kW.
Mirroring the recently unveiled G-class, lesser versions of the GLS will not only use the V8 with lower outputs but also the electrified 3.0-litre straight-six petrol that debuted in the CLS 53, as well as the similarly sized diesel that can deliver up to 250 kW. A nine-speed automatic gearbox will be standard across the range.
With Mercedes-Benz set to launch the GLE first, the GLS will only become available next year with the AMG arriving either towards the end of that year or in early 2020.
IMAGES from WalkoArt and motor1.com
