When it arrives later this year, the next-generation Mercedes S-Class will be more luxurious and technically advanced than ever before. Topping the range will be the ultra-luxury Maybach S, which is also being renewed for the next generation. Last month, video footage emerged online showing a prototype of the new Mercedes-Maybach S-Class undergoing testing. Now, the luxury limo has been spied inside and out by our spy photographers during a testing session at the Nurburgring.

On the outside, the new Mercedes-Maybach S-Class is still heavily camouflaged. A unique grille and chrome accents will distinguish it from the regular S-Class, but we're not expecting any drastic design changes other than that. Like the regular S-Class, Maybach's new luxury limo will be updated with slimmer headlights, new taillights, and pop-out door handles for a sleeker, more contemporary look.

Our spies also managed to get a first look inside the new Mercedes-Maybach S-Class, and it's just as opulent as you would expect. Dominating the dashboard is a massive Tesla-style portrait touchscreen and a wide digital gauge cluster. There's also a noticeable lack of physical buttons.

The dashboard looks very similar to the layout seen in prototypes of the regular S-Class, but the Maybach version will offer rear legroom in the back thanks to its longer wheelbase, as well as some plush rear seats. Because let's face it, most people who buy a Maybach spend most of their time in the back being chauffeured around in crisp comfort, rather than behind the wheel in the driving seat.

Also expect the new Maybach-Mercedes S-Class to be loaded with the latest technology, including advanced autonomous driving assists and sophisticated safety tech. As for the powertrain, rumors suggest the new Maybach will be the only version of the new S-Class that will be offered with a V12 engine.

The new Mercedes S-Class is expected to debut later this year, so the Maybach version will likely follow a few months after, possibly in 2021. When it goes on sale, expect to pay a significant premium for the ultra-luxury Maybach over the regular S-Class. The current Maybach S starts at $173,000, which is around $78,000 more expensive than the regular S-Class.