BMW F10 550i Sounds Mean with Active Autowerke Exhaust [Video]
However, the differences between the 550i and the M5 are pretty big. The first has 450 HP (in the updated version) and 650 Nm of torque, whilst the latter has 560 HP and 680 Nm of torque, and a lot more tricks under the skin than you might think.
The sound is glorious though in the M5 and that V8 growl is unmistakable. That's one point where the M5 wins hands down but it's also a problem that can be solved easily with the right aftermarket exhaust.
The car in the video below was fitted with the M Sport package and an Active Autowerke Signature Exhaust that will set you back $2,499 and sounds pretty amazing. It's made completely out of quality stainless steel and comes with a 2-year warranty. Just to convince yourself, watch the clip.