I had an Audi RS6 which was fast, but it doesnt compare to the power, handling and overall performance of my new E55 AMG. I love it, I love every moment Im in the car driving it. My Audi RS6 didnt deliver the same for me. I can easily tell how much faster my E55 is over the Audi. I have my car at a race track doing 12.2 quarter mile.
I dont know where to start, but looks can be deceiving
I guess the Navigation system, but I didn't buy the car for the navigation ot the phone system.