iPad GPS not accurate

A WiFi ONLY iPad does NOT have any GPS antennas to communicate with GPS satellite signals.

A Wifi ONLY iPad can only use triangulation of nearby WiFi signals in an area, for approximate GPS location.

So, GPS location acuuracy can vary based upon the amount of WiFi signal transmission in an area.

To get more accurate GPS location, you would need to return and purchase a WiFi AND cellular data iPad that DOES contain GPS antennas to communicate with GPS sattelite signals to provide better and more consistent GPS location signals and data.

Only WiFi+Cellular models of iPad have GPS - this being a function of the iPad Cellular chipset.  WiFi Only models of iPad have no GPS capabilities whatsoever with which iPad Location Services can derive location. This fundamental difference may significantly impact precision positioning or your ability to use mapping Apps.

WiFi Only models can only “infer” their location from a database lookup of neighbouring WiFi networks for which the geographic location is known, or the geographic location of your public IP address. For static applications in urban locations, where the location of IP public IP addresses and WiFi networks are known, an “inferred” location can be relatively accurate. However, in rural locations, or when using a Cellular/Satellite/VPN connection, location accuracy of an inferred location [if it works at all] may be very inaccurate. 

All this has significant implications for non-static mapping applications. If you need to have moving maps, or have future flexibility to do so, you’ll need to consider a WiFi+Cellular model of iPad. Choosing a cellular model does not commit you to adding a cellular service plan for the iPad, but ensures that you have immediate access to GPS/GNSS positioning services.

wi-fi location services are based on broadcast positions of wireless routers, so it's not going to be all that accurate.