But wait. It's OK on all my phone's.

Lithuania - EUR.

Of course you can choose EUR currency using any country with EUR (language won't change).

Can you give me more info about your device. Interesting that on some phones it's OK.

Thanks! Yes I know.

Right now I'm using phone's locale to get list of languages with Currency and ... it looks it's outdated :(

Great! I'm glod it works fine. I think I can add better detection for units. For sure.

Miles are common.

Try also delete app's cache using this trick:

1. Go to Add Fillup screen - tap add with empty form

2. You'll see error - Go to Menu / Stats

3. Go to Fuel Log.

Are you sure you have right units? :)

Make sure you have full fillups. Some time ago I've got similar report and the user set UK gallon and UK mpg.

Please, check your settings.

Can you show me screenshot and give me more details.

What is your odocounter right now.

No need to do anything. Just install Fuelio. No need for Pro right now.

It is marked as a bug (if you have missed fillups). Marked for future releases.

The question if you have missed fillups?

Sample file is basic. This is right. But you can actually add some costs and do the export. It's bug - still waiting to be fixed. If you don't have fillups - while adding costs autobackup is not working. Add at least one fillup and you'll see everything in CSV.