Yeah, I figured out the accuracy improves with turning on the GPS (it's off by default). However, I still find it can still be off by 30 feet or so...still pretty good. There's no turn by turn but a cool thing I noticedis that if you run a direction route, the turn on GPS, it will track your movement as you drive, refreshing the map as needed to keep the "blue flashing dot" as needed. The GPS does drain the battery quickly, so I'd prefer topair itto my Bluetooth GPS. I haven't been sucessful yet.