Sedan crossover given brief debut online

The Mercedes-Maybach Ultimate Luxury concept has been unveiled ahead of its scheduled debut at next week's 2018 Beijing motor show, with the manufacturer accidentally pushing the car's microsite live briefly before taking it down.

Contrary to expectations, the Ultimate Luxury concept isn't just a gussied-up version of the next-generation Mercedes-Benz GLS crossover. Instead, it resembles high-riding, tall-roof sedan.

While the car's overall surfacing doesn't break from Mercedes' current smooth and organic mould, this latest Maybach concept has a few details that could be used to distinguish the next-generation of Maybach-branded vehicles.

Elements, like the tall grille with chromed vertical slats topped with 'Maybach' lettering, thin headlamps, and a chrome strake starting just aft of the front wheel arch and stretching into the door panel, have been seen on earlier Maybach concepts, such as the Vision 6 Cabriolet.

The turbine-style wheels and multi-piece rectangular tail-light units are new to Ultimate Luxury.

On the inside, the Ultimate Luxury features four seats, hectares of soft white leather, dark wood trim, blue ambient lighting, enough rose-coloured metal to last you several lifetimes, and, of course, a tea set for passengers ensconced in the rear.

According to Autoblog, the Ultimate Luxury has an electric motor for each wheel, generating a total of 560kW of power.

With its 80kWh battery pack, the concept is said to be good for a driving range of over 320 kilometres. Top speed is reportedly limited to 250km/h.

In addition to wireless charging, the Ultimate Luxury also supports fast charging, which can top the car's batteries up to 75 per cent of capacity within five minutes.

We expect to find out more about the concept when it's officially unveiled at the Beijing motor show next week.