Maps vs Google Maps data consumption
Solution 1:
There was a study about it recently and it compared the data used on average for 10 miles and for 20 minutes driven.
Google Maps uses the less data, 0.67 MB every 10 miles and 0.73 MB every 20 minutes on average.
On the other side, Apple Maps uses 1.33 MB every 10 miles and 1.83 MB/20 minutes.
If you want to use less data you should turn off trafic data and satellite view.
I’ve tested caching for long trips <60 miles and it worked in both apps, so you can use the one you prefer!