We recently had the opportunity to test the 2019 BMW X7, the company's largest and most expensive SUV. Over a week of testing, we became acquainted with the X7's many awesome features and options, which help justify its hefty price tag. The xDrive50i carries a base price of $92,600 but the model we had packed a slew of options bringing the as-tested price up to $117,945. Depending on where you live, the price of the X7 could get you a small house. But once you hear about some of its amazing features, you may consider selling your home and living in this incredible SUV.

Glass Controls

Glass controls are one of the cheapest options available for the X7 but it is also among our favorites. This $650 option replaces the standard shifter and iDrive controls for ones made from Swarovski crystal - talk about opulent. The shifter, in particular, looks fantastic and even houses a floating 'X' that lights up at night. The other controls like the iDrive knob and engine start/stop button are also made from glass and have a cool prism light effect.

Panoramic Sky Lounge

If you fancy the glass controls but also want our next option, the Panoramic Sky Lounge LED Roof, you should opt for the $1,300 Executive Package. In addition to the glass controls and heated/cooled cupholders, the Executive Package adds the beautiful Sky Lounge. At night, the glass panoramic roof lights up light stars in the sky and even changes color based on the ambient lighting settings. Rolls-Royce may have lights in its headliner but we think BMW's version is better because it allows you to look up at the night sky.

Bowers & Wilkins Audio

The base X7 comes with an excellent Harmon Kardon Audio system but our tester came equipped with the $3,400 Bowers & Wilkins Diamond Surround Sound System. This audio system includes 20 speakers including Diamond Dome tweeters, 1,500 watts, 10 amplification channels, and Dynamic Sound Equalizing. It sounds phenomenal and just like almost every other piece of the X7's interior, the metal speaker grilles light up at night. We've seen premium car audio systems cost twice as much as the Bowers & Wilkins, so this actually feels like a relative bargain.

Safety Tech

It would take an entire book to talk about the X7's laundry list of safety features but we wanted to mention a few of our favorites. The Driving Assistance Professional Package costs $1,700 and adds Active Driving Assistant Pro, which includes camera-based semi-autonomous support. It also includes Extended Traffic Jam Assistant for limited access highways, enabling the car to drive by itself at speeds under 40 mph. We also loved the X7's high-resolution 360-degree camera, which even includes markers for where the doors will open, so you don't ding the car next to you.

Seats

Our tester was equipped with the Luxury Seating Package for $1,200, which includes multi-contour front seats with ventilation and massage function. Ventilated seats can also be added separately for $500 and BMW also offers heated front seats, armrests & steering wheel for $250. We also tested the second-row captain's chairs for $850, which offer greater comfort than the standard bench seats at the expense of being able to fold flat. BMW also offers pillows on the second-row headrests, so your passengers will be able to take a nice nap.

Rear Seat Entertainment

Rear-seat entertainment like a DVD player can feel silly in 2019 when kids can just watch a movie on their iPhone. But BMW's rear-seat entertainment professional package for $2,200 is a fun toy because it allows the rear occupants to control the navigation, audio, and lighting setting of the car. Don't worry parents, because you can stop the kids from playing with the radio and they can plug in headphones to have their own audio feed.

Engine

Perhaps the most expensive "option," if you wish to call it that, on our test car was the 4.4-liter twin-turbo V8 found on the xDrive50i model. You do get more than just the engine when you upgrade from the six-cylinder xDrive40i but this comes at a massive cost of $18,700. Yes, that's a ton of money to spend on an engine but it does bump the power up from 335 to 456 horsepower. It also drops the 0-60 mph time from 5.8 seconds to 5.2 seconds. The V8's exhaust sounds like it belongs on an M car and the added grunt is immediately noticeable.