We're just a few weeks away from the world debut of the all-new X7, BMW's largest and most luxurious SUV to date. First previewed by the X7 iPerformance Concept last year last year, the massive three-row SUV is an ambitious attempt to rival the mighty Range Rover.

Ahead of its October debut, our spies have once again snapped the X7 inside and out. While the camouflage on the exterior of this latest prototype hasn't changed, we get a much better look inside the lavish cabin. As expected, these spy shots confirm the X7 will be a luxurious full-size SUV with room for more than five occupants.

The interior shown in the photos has seating for six, but a seven-seat version is also expected to be available. Despite being a pre-production car, the interior looks production ready with two-tone leather seats, an Alcantara headliner, and a plush wood trim on the dashboard and center console.

The prototype also features a digital instrument cluster with Operating System 7.0 installed, which can also be found in the 8 Series Coupe. The infotainment system still appears to be work-in-progress, however, as the iDrive screen is displaying a 5 Series sedan instead of the X7.

Our spies also managed to photograph the rear center console for passengers sitting in the second row, which features controls for the climate settings, USB ports and a pair of cup holders. We're surprised to see cheap-looking plastic materials surrounding the cupholders considering this is a flagship SUV, but this could change in the final production model.

Engine options for the BMW X7 are expected to include a turbocharged 3.0-liter straight-six engine and a twin-turbo 4.4-liter V8 in the US when it goes on sale in 2019.