It runs like a raped ape and whips the pants off of most "muscle cars" for 0-60, 0-100, 0-100-0 and all around handling, while earning (for me) a respectable 22.5 MPG.
Good quality leather, easy controls, nice features like heated/cooled seats. All surfaces feel like high quality materials were used and it does not rattle. It feels as solid as the Volvo line of vehicles before Ford became involved.
People driving other luxury cars that it competes with know not to screw with an M45. Drivers of cars it does not directly compete with (who are car people) know what it is capable of & unless they purposely bought a rocket, will leave the M alone.