Competing at the top of the premium luxury car segment, where the BMW 7-Series and Mercedes-Benz S-Class rule supreme, the all-new Genesis G90 is now available for order.

Powered by a 3.3-liter twin-turbo V6 good for 365 HP and 376 pound-feet (510 Nm) of torque, the RWD 3.3T Premium is the most affordable of the range, at $68,100, while for the AWD model consumers will have to pay at least $70,600.

Hyundai's premium brand has a second engine in store for those looking for more power: a 5.0-liter V8 that is found on the Ultimate grade level and produces 420 HP and 383 lb-ft (519 Nm) of torque. The RWD variant starts from $69,700, while the AWD will set you back for 72,200. Both units are mated with an eight-speed automatic transmission as standard.

The G90 also packs an advanced safety and technology suit that counts the lane keep assist, lane departure warning, smart blind spot detection with rear cross-traffic alert, driver attention alert, automatic emergency braking with pedestrian detection, dynamic bending light and high beam assist, smart cruise control with stop/start, multi-view and forward-view cornering camera and the list can go on.

The first examples of the Genesis G90, which is known as the EQ900 in South Korea, will arrive at retailers at the end of September. All prices are recommended by the manufacturer and exclude a $950 freight charge.

The Hyundai Group’s luxury spin-off Genesis is wasting no time expanding its lineup, with the newly born Korean brand now readying a more extravagant, stretched version of the G90.

We scooped Genesis’ engineers driving around a long-wheelbase G90 sedan near their German headquarters without any camouflage whatsoever. The tester reveals that the Koreans have stretched the G90 by adding more bodywork between the doors, while the rear door itself appears to be slightly longer as well.

Given that the base G90 measures 5,205mm (204.9 inches) long, the stretched model could approach 5.4 meters (nearly 213 inches) in length.

We haven’t caught a glimpse of the elongated G90’s interior yet, but expect a more lavish experience for the rear passengers, including a two individual seat layout and plenty of amenities ranging from massage functions to a chilled minibar.

The G90 LWB, or whatever Genesis calls this body style, as a name has yet to be confirmed, should get one or more of the regular model’s powertrains, which include a 315PS (311hp) 3.8-liter V6, a 370PS (365hp) 3.3-liter turbo V6 and a 425PS (419hp) 5.0-liter V8, all paired to a standard 8sp automatic driving the rear or optionally, all four wheels.

Technically, since the base G90 sedan is a Mercedes-Benz S-Class rival, the LWB G90 is Genesis’ answer not only to the LWB versions of the Audi A8 and BMW 7-Series, but also to the Maybach-badged S-Class. In reality, though, and at least in its first generation, the Korean model is unlikely to be cross-shopped with Merc’s flagship sedans.

The regular G90 will go on sale in Korea as the Genesis EQ900 at the end of this month, followed by a global launch in the first half of 2016. The longer wheelbase model should be offered at the same time.