Some brochure scans were recently posted to the online forum Worldscoop and show the GLS from the front and rear. Unfortunately, we still don’t know what updates are planned for the interior, though a redesigned dash, new trim materials and an updated infotainment system are all expected.
Mercedes only updated the GL’s powertrain lineup for 2015, so for the GLS, which we’re expecting as a 2017 model, powertrains should carry over mostly unchanged.
A GLS350 BlueTEC should stick with a turbocharged V-6 diesel good for 240 horsepower and 455 pound-feet of torque. A GLS450 will likely have a turbo V-6 with 362 hp and 369 lb-ft, and a GLS550 will likely have a turbo V-8 with 429 hp and 516 lb-ft.
At the top of the range will be a GLS63 from Mercedes-AMG with a turbo V-8 good for about 550 hp and 560 lb-ft. 4Matic all-wheel drive will remain standard across the range.
A world debut should take place November 18 at the 2015 Los Angeles Auto Show. For more from the show, head to our dedicated hub.