say i get a journey with only sports package. can you get navigation down the line, or can you only get navigation if you get premium? therefore i'd need to get the sports package + premium?

 

It's more than that, just get it if you eventually want Nav.

 

It's nearly impossible to add OEM Nav down the road. There is more to it than just the screen and Nav Unit.

 

For some reason this question seems to come up a lot. Just pay now and enjoy.

 

Is it possible? Of course!

Are you good with electronics and wiring? If yes, then this might save you some money.

If not, just buy it now and save the regrets later.

I added OEM navi to my G35. I only spent around 1000. It was definitely worth it, but it's not something everyone can do.

 

electrical is no problem. it's just when i was checking on edmunds adding the options .. it says for the g37 that the premium package was needed in order for the navigation package. didn't really know if that was for certain or not.

 

Premium is required for Nav.

 

^ that depends on what are you asking.

Yes, if you want navi when you buy it with the car, premium package is required.

But if you are asking if premium is needed to install navi later, the answer is no. If you are going to install it later, premium/no premium doesnt matter