2021 BMW X7M is the brand's biggest people mover and brings an undeniably upscale aura and impressive levels of performance. Behind the three-row SUV's borderline-bloated kidney grille are excellent turbocharged engine . While the standard straight-six is perfectly adequate with its 612 horsepower . Still, the beauty of the big BMW is that every one has a cushy and hushed cabin, as well as a plethora of luxury amenities and driver-assistance tech. Although its interior is smaller than its exterior suggests, and its power rear seats have sluggish operation, the 2021 X7 earns the highest marks among high-end SUVS.