2025 BMW X6 M

The BMW X6 M typifies the incredible diversity in the modern luxury-vehicle market — and the incredible power available there. Mechanically, the X6 is a twin to the midsize BMW X5, which has a more stately, traditional SUV silhouette. The X6, though, trades some rear seat space and cargo room for a stylish raked roofline. And the X6 M propels this fashion-forward package with a 617-horsepower hybrid powertrain and all-wheel drive. Beginning with an update last year, all X6 Ms include the formerly optional Competition package as standard equipment. It raises standard output from its previous 600 horsepower and includes blacked-out exterior trim.

The X6 spawned the so-called SUV coupe class in 2008. Today, every German luxury stalwart makes a vehicle like it, all of which are sure to satisfy. The Audi RS Q8 and Mercedes-AMG GLE 63 S are the most direct competitors. Both pack 4.0-liter twin-turbo V8s, the Audi's slightly less powerful than the X6 M's and the AMG's slightly more, with both priced right on top of the BMW. Meanwhile, Porsche clusters four different Cayenne Coupe powertrains around the X6 M. The 493-hp non-hybrid GTS and 512-hp plug-in S E-Hybrid undercut the BMW's sticker, while shoppers with a looser price cap will want to check out the 650-hp Cayenne Turbo GT or the 729-hp Turbo E-Hybrid.

With so many plug-in hybrids available today, it can be easy to forget that not all hybrids can move under electric power alone, as a plug-in can. The BMW X6 M Competition is a mild hybrid, which means it cannot. The electric motor, which is integrated into the transmission housing, assists the gas engine under acceleration and allows for smoother operation of the engine stop-start system. While this might improve real-world fuel economy, it makes no difference in the X6 M's EPA rating, which is unchanged from the pre-hybrid figures of 15 mpg combined (13 city/18 highway).