I don't have the nav but it looked to be pretty draconian anyway. I have 2 Garmens - one for my XFire and the other newer one for my son's Bonnevile. Both work great. They can be place in a better location for vision while driving, have been very accurate, provide traffic info and just about anything else you need. For $150, you can't beat it. I love technology, but only if it works and provides some value.