Time & location services consuming a lot of data!

My story

6:30 am I start driving using Waze.
7:30 am I stop driving (long commute to take my kids to school) and start exercising for 40 minutes. 
8:45 am I drive back home and arrive after 15 minutes. Again using waze.



Here is my consumption of data for that period of time (I reset the statistics just before driving):

Not that bad for 2:30 hours

But, checking further:

22 of those were from "System Services"!

And even further:

Time & Location?!

I was not able to find out what was causing such a disproportionate consume of data, not specific app was pointed out but 73% of my data was being consumed by "Time & Location". I googled for that problem at not avail. After some trial and error I was able to isolate the problem:

I love google location services and have set permission to google maps always on. Apparently having this option on makes the "Time & Location" feature to use a lot of data.  

My solution so far has been turning off either data or Google Map's permit for location while commuting. Not the ideal but is what I got. 

I was disappointed by iOS because it did not show which app was consuming that data (google maps had consumed 3 MB) and I am also disappointed by Google by making location history work in that way on iOS. 

I'm thinking about switching back to Moves app... but I'm not sure. I don't like having this information in several apps. Any idea?