X6 M is high performance edition of casual X6 model that was mass-produced from 2009 until 2014. M version of X6 together with X5 M were the first BMW M cars that received xDrive all-wheel drive systems and automatic transmissions. X6 M had an 4.4 L V8 547 hp (408 kW) engine. Vehicle has engine that is more powerful than it‘s competitor Porshe Cayenne (power is bigger by 56 hp or 42 kW).