This app was mentioned in 3 comments, with an average of 2.00 upvotes
Mileage. If y'all know of another app that does the same and is updated every once in a while (and can import my old data from spreadsheet), let me know.
I used Mileage for a number of years
https://play.google.com/store/apps/details?id=com.evancharlton.mileage
Worked great for me
https://play.google.com/store/apps/details?id=com.evancharlton.mileage is a good one I used for a while does mpg too. Just don't forget to input a fillup, screws with the stats