Went in for my B Service this week only to be informed that Mercedes has an ECU update and they wanted it applied to the car. I joked on whether I will be getting more horsepower and they said people reported better acceleration. They also reprogrammed the entire car for other reasons best known to themselves which was included in my service plan. Picked up the car and gave it a go, the change seems to be smoother distribution of power to the wheels because one of my complaints with it was that when you floored it, the car would usually go into traction control and a standstill