It looks like you might be referring to the BMW X3 M, X5 M, or XM. Here's a quick breakdown: BMW X3 M – A high-performance compact SUV with a 3.0L twin-turbo inline-6 producing up to 503 hp (Competition model). BMW X5 M – A midsize performance SUV with a 4.4L twin-turbo V8, delivering up to 617 hp (Competition model). BMW XM – A flagship plug-in hybrid SUV, combining a 4.4L twin-turbo V8 with an electric motor for a total of 644 hp (or 738 hp in the Label Red model).