If the nav system in the Durango is the same one used in the RAM trucks I say save your $$. I had it in my '14 RAM and it was the most useless piece of crap I've ever seen for a NAV system. It would give you a route and if you wanted to take a different road it would continually re-compute the route.....to get you back onto the original one it had come up with in the first place. Often it would tell me to make a turn onto a road that wasn't there. What WAS there was an empty field! In contrast, my TomTom would completely give you a new route, using the road you were on, and do it NOW. Plus the information it gives is far better than the factory setup. Best of all, I get free map upgrades four times a year for life of the product, and the total cost was $159. It's not as fancy as the one in the dash, and you have to plug it in, but IMO it's head and shoulders above the built-in setup. I'm sure other opinions may vary on this, but my experience with the OEM nav was horrible at best.