2023 BMW Alpina XB7 Packs a 630-HP Twin-Turbo 4.4-Liter V-8

• The 2023 BMW Alpina XB7 gains the same front-end revisions as lesser X7s, while also boosting output from the twin-turbo 4.4-liter V-8 to 630 horsepower.

• BMW claims the XB7 can hit 60 mph in 3.9 seconds and a 180 mph top speed.

• The XB7 also gets an opulent interior with an illuminated gear selector and an Alpina steering wheel with blue and green stitching. The starting price is $145,995.

A mid-cycle update for BMW’s largest SUV, the X7, earlier this year brought more powerful and efficient engines and a revised front end with squintier headlights sandwiching the vast front grille. Now BMW has revealed the most expensive and high-performance version of the X7, giving the 2023 Alpina XB7 the same visual upgrades and the most powerful engine in the X7 lineup.

The XB7 continues to use a tuned version of the twin-turbocharged 4.4-liter V-8 found in the X7 M60i, but while the pre-facelift XB7 made 612 horsepower, the new version boosts that to 630 ponies. Torque stays the same at 590 pound-feet—a 37 pound-foot advantage over the M60i—and BMW says the torque peak arrives 200 rpm earlier, at 1800 rpm, and lasts until 5600 rpm. The latest X7’s V-8 also includes 48-volt hybrid assistance that improves engine responsiveness and efficiency, and Alpina’s version of the 4.4-liter also gains a unique cooling system.

The motor is paired with an eight-speed automatic transmission which includes the 48-volt starter-generator, and the XB7 has all-wheel-drive with an electronic limited-slip differential on the rear axle. BMW claims the XB7 can reach 60 mph in 3.9 seconds and run the quarter mile in 12.4 seconds, impressive figures for a vehicle with a curb weight around 6000 pounds. Top speed is said to be 180 mph if the XB7 is outfitted with the performance tire package and 21-inch wheels, which can be added at no extra cost.