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I don't have unlimited data on my cell phone so using that is not an option. I ordered the navigation upgrade flash drive for my 2013 Volt. The upgrade leaves a lot to be desired. Still many roads not listed at all that have been in existence for decades. The for price I really expected a lot more. Will have to rely on my Garmin for any serious navigation.
 

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I have a 2GB data plan with one month unused data rollover, so I usually end up with around 3.5 GB at the start of each month. I store offline maps from Google Maps on my phone. The result is I managed to travel from Denver to New Hampshire and back to Denver and used just slightly more than 2GB in that month. I would have used less if I had turned off traffic updates but those have been helpful to me in the past so I leave them on.
 

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I don't have unlimited data on my cell phone so using that is not an option. I ordered the navigation upgrade flash drive for my 2013 Volt. The upgrade leaves a lot to be desired. Still many roads not listed at all that have been in existence for decades. The for price I really expected a lot more. Will have to rely on my Garmin for any serious navigation.
FYI, I use tracfone so I am very aware of my data usage, and my wife I function just fine with these plans. And yes, we have very nice smartphones. I have a MotoX and she has a LG G4 and we never worry about using Google Maps for directions. It uses such a tiny amount of data it really isn't an issue at all. What eats up data are photos, or more importantly, videos. Google maps uses a tiny fraction of data. I have tested it for a complete hour just to see. Anyway, I don't remember the exact amount but it was very small around 40MB for an hour if my memory is right. Anyway, just keep that in mind. We spend about $100 bucks per year on each of our cell phones, NOT A MONTH, per year ;)
 

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I don't have unlimited data on my cell phone so using that is not an option. I ordered the navigation upgrade flash drive for my 2013 Volt. The upgrade leaves a lot to be desired. Still many roads not listed at all that have been in existence for decades. The for price I really expected a lot more. Will have to rely on my Garmin for any serious navigation.
Sorry it sucks...thank you for the warning so the rest of us can save our money...
 

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Most GPS apps don't use much data as long as you have the app download map data before you leave (On WiFi of course).

Another alternative is to just buy a dedicated GPS. Spend $100 and most of those get free updates for at least a few years, unlike most built in GPS'.
 

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Yes, thanks for the heads up on the bad GM update. I wonder if you can get your money back. Among the many better options, there are some nav apps that use completely offline map databases. The one I use is Navigon in iOS, which has been great IMO. Or one of the Garmin models that includes the lifetime free map update option. I have the GM nav and wouldn't use it even if it had a good update. The apps are just much more convenient to use for me.
 

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When I bought my 2014 back in February I wanted the latest and greatest for the Nav. I purchased the upgrade. Within 20 miles it was giving me an incorrect lane for a freeway onramp. The road had been changed a year before the upgraded map.
Sooooooo, I am disappointed as well after spending $180 bucks for an outdated or just plain incorrect map update.
Never again. I'll just use my phone.

2014 Volt Premium - Safety pkg 1 and 2, Navigation
 

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I don't have unlimited data on my cell phone so using that is not an option. I ordered the navigation upgrade flash drive for my 2013 Volt. The upgrade leaves a lot to be desired. Still many roads not listed at all that have been in existence for decades. The for price I really expected a lot more. Will have to rely on my Garmin for any serious navigation.
This sounds like you have the map screen Zoomed out in (declutter mode) which eliminates all secondary roads.

I used the Non-updated Nav map while on a two week 5600 mile driving vacation. I didn't have any issues as long as the screen mileage scale was Zoomed In to the bottom ranges.

I was on some pretty remote roads out West. But you really had to zoom in close to get road labels.
 

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I was considering getting the update since my maps are from 2012 but thanks for your info ... I won't be paying for this. I've got 4GB data per month so I will just use Google Maps.
 

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I was considering getting the update since my maps are from 2012 but thanks for your info ... I won't be paying for this. I've got 4GB data per month so I will just use Google Maps.
Good call.
 

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I was considering getting the update since my maps are from 2012 but thanks for your info ... I won't be paying for this. I've got 4GB data per month so I will just use Google Maps.
I did buy the upgrade and regretted it. I am going to try Waze on my iPhone 8 Plus. I really would never order the navigation option. The nav was already part of the packages on my new to me 2014 when I bought it back in 2/17. It would be handy if it actually put me in the correct lane for freeway on ramps. Of course by the time you realize you are in the wrong lane you are stuck. Especially in Southern California traffic. Other than that it works very well...........

2014 Volt Premium - Safety pkg 1 and 2, Navigation
 
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