Not worth it. The nav system dates from the 2003 launch of the w211 chassis. A decade down the road it feels really, really old and clunky. It doesn't do exact street addresses, only the block in which the address is located. You can't type in or speak the destination, you have to use the cursor buttons to move through the on-screen keyboard to provide input. It was fine for the time, but a $100 Garmin from Wal-Mart is generations ahead of it now, not to mention smartphone apps.