Yes you can use Google maps even if you do not have an internet connection.
But, first of all you should know that there are some limitations on google maps like the fact that you cannot download large areas, only the areas that has maximum 1.5 GB in size, or the fact that the maps are not compressed like iGO or Garmin maps and are lager in size.
1. Open your google maps app and press the menu button(or the top-left button) and tap Offline areas
2. Now press the Plus (+) button from the button-right corner and select the area you want to download. Remember that you cannot download the whore country of France because the max limit of the downloaded map is 1.5 GB
Now turn off your Internet connection and see the magic 😉