IT started with BMWโ€™s X1 back in 2009, now, 10 years on, the X factor has already reached 7.

The new SUV is a biggie, more than 5m in length and 2m wide and itโ€™s scheduled to arrive in May, at about the same time as the general election, in a two-model diesel-powered range.

The seven-seater X7 will be sold from $119,900 for the twin-turbo xDrive 30d and the quad-turbo M50d will cost $169,900.

ย The 3.0litre straight-six engines produce 195kW/620Nm in the 30d and a massive 294kW/760Nm in the M50d, with respective sprints to 100km/h in 7.0 and 5.4 seconds.

Both models get 8-speed Steptronic transmission with all-wheel drive and two-axle air suspension with automatic self-levelling.

Ride height is adjustable via a toggle for off-road driving, or by activating a โ€˜loading modeโ€™ that can lower the vehicle 40mmย  for easier access.

Itโ€™s a hard thing to miss: The X7 kidney grille is BMWโ€™s biggest one yet, more of a one-piece than the twin grilles of the past, and could easily be mistaken for one of the flashy new Chinese SUVs until the familiar BMW roundel comes into focus.

ย Both models are high-spec.

The xDrive30d runs on 20-inch wheels with run flat tyres and features adaptive headlights, electronically adjustable seats in all three rows, seven USB points, wireless phone charging, Vernasca leather trim, four-zone climate control, three-part panoramic sunroof and a head-up display.

โ€œThis experience can be further augmented by the optional Panorama glass roof Sky Lounge,โ€ BMW says.

โ€œOnce dark, LEDs light up over 15,000 graphic patterns, bringing an expanse of starlit sky to the interior.โ€

It also has Parking Assistant Plus, with Reversing Assistant, Lateral Parking Aid, Rear View Camera, Top View, Surround View and 3D View.

Then thereโ€™s Live Cockpit Professional, which includes a 12.3-inch instrument cluster, 12.3-inch BMW operating system 7.0 display and โ€˜Intelligent Personal Assistant.โ€™

And a 10-speaker audio system.

The M50d comes with an M Sport diff in the rear axle, plus M Sport exhaust and brakes, Integral Active steering and 22-inch alloys.

Inside it has Alcantara trim, a harman/kardon audio system, a five-zone climate control, heated and cooled front cup holders, M leather steering,ย  Laser headlights and whatever its โ€˜Executive Drive Proโ€™ system is.

Both models have 40/20/40 split-fold seats and 326litres of cargo space, expandable to 2,120 litres via the seat-flattening process.

Plus, of course, every bit of safety electronica known to mankind.

โ€œThis game-changing BMW X range topper sets a new benchmark for opulence, unrivalled by anything in the premium Sports Activity Vehicle segment,โ€ BMW Australia CEO Vikram Pawah said.

For example, โ€œto amplify the luxury experience, customers can opt for the stunning โ€˜CraftedClarityโ€™ application, which includes a handmade diamond-cut glass gear selector, embellished iDrive Controller and audio system control.โ€

That huge grille, by the way, has air flaps which open or close as needed for increased cooling and aerodynamic efficiency.

Driving in the X7, BMW says, is a โ€˜presidential experience.โ€™

No doubt.

But I wonder how Iโ€™ll explain that โ€˜Intelligent Personal Assistantโ€™ to my wife.