Mercedes has started testing the Maybach version of the upcoming GLS on public roads and of course our spies were there to catch them in the act.

While it’s not exactly the production version of the Maybach Ultimate Luxury Concept that debuted at this year’s Beijing Auto Show, the Mercedes-Maybach GLS is expected to share more than a few design details with it, before entering the super-luxury SUV game against models like the Bentley Bentayga and the Rolls Royce Cullinan.

As the name suggests, the new Maybach SUV will be based on the upcoming generation of the GLS but is expected to further differentiate itself with unique exterior details and a much plusher interior that may include a model-specific dashboard design, featuring leather, wood and metal details.

On the outside, the new Mercedes-Maybach GLS is set to get a new front grille that will become a trademark of future Maybach models, unique bumpers and wheels, as well as extended chrome detailing.

As the most expensive Mercedes SUV, the Maybach GLS will most likely be offered with the AMG-developed twin-turbo 4.0-liter V8 engine while some reports suggest the use of a plug-in hybrid powertrain that uses the very same engine in its heart. The V8 engine is currently used by almost every Mercedes model in the range.

Mercedes will focus on tuning the upcoming Maybach models to offer the smoothest ride. The carmaker is developing a more advanced version of their Magic Body Control system, using a new camera setup that will help in detecting surface changes ahead with better precision and adjust the suspension accordingly.

Earlier reports suggest that we could see the new Mercedes-Maybach GLS as soon as this month, at the Los Angeles Auto Show. If true, expect Mercedes to reveal not only the posh Maybach SUV but the lesser versions of the new GLS full-size SUV.

Image Credits: S. Baldauf/SB-Medien for CarScoops