 The infotainment system is the worst I have seen in a luxury car. The controls are poorly designed and hard to use. The integration of the system is one of the worst I have seen. Tire pressure sensor is the dumbest I have seen. It tells you that pressure is low but you have to figure out in which tire and by how much. Many of the components failed in the first year of ownership requiring several visits to the dealer. Oil level sensor was replaced twice within the first 2 months. Tires and brakes wore out before 20k miles. Blue tooth adapter is a $500 option, but is not well integrated. Mine failed after 12 months and 6 days.  I will never again purchase a Mercedes.