Where Fuelio saves your log, and how to get it onto a computer
Fuelio keeps your fill-ups and costs in CSV files. Export CSV makes one file per vehicle, Backup All makes one zip with every vehicle and your photos, and the cloud backups copy the files to Google Drive or Dropbox. Below is where each one is, which one to pick and how to open it on a computer. The folder names come from Fuelio’s own help page.
The files Fuelio makes
| You tap | Where the file goes | What is in it |
|---|---|---|
| Settings, Backup, Export CSV | Fuelio/backup-csv on the phone | One CSV file for the vehicle you pick: the vehicle, its fill-ups, cost categories and costs. |
| Settings, Backup, Backup All | Fuelio/backup-local on the phone | One zip with a CSV file for every vehicle, and pictures.data, a zip of the photos you attached to entries. |
| The Google Drive backup | Android/Fuelio on your Drive, in backup-csv and backup-sync | The CSV exports, and in backup-sync one zip per vehicle, named like vehicle-1-sync.csv.zip. |
| The Dropbox backup | Apps/Fuelio in your Dropbox | Fuelio’s backup files. Its help page names a backup-csv folder there for CSV files. |
Fillbook opens these files as they are: a CSV file, the Backup All zip, a vehicle-1-sync.csv.zip from Drive, or several at once.
On an Android phone
- Open Fuelio, then Settings, then Backup. Tap Export CSV and pick a vehicle, or Backup All for every vehicle at once.
- Open the phone’s file manager and go to the Fuelio folder at the top of the internal storage.
backup-csvholds the CSV exports andbackup-localthe Backup All zips. - Send the files to the computer with a USB cable, by e-mail or with a drive app.
No Fuelio folder at the top of the phone’s storage? Search the file manager for backup-csv, or turn on the Google Drive backup in the app and take the files from Drive, as below.
From Google Drive or Dropbox
Turn on the Google Drive or Dropbox backup in Fuelio’s settings. After that, Fuelio copies its files to the cloud as you add fill-ups.
- Google Drive: on the computer, open your Drive and go to
Android, thenFuelio.backup-csvholds the CSV exports.backup-syncholds one zip per vehicle,vehicle-1-sync.csv.zip,vehicle-2-sync.csv.zipand so on; the number follows the order in which you added the vehicles to Fuelio. Download the files you want. If you download the whole folder, Drive packs it into one zip, and Fillbook opens that too, with the zips inside. - Dropbox: the files are in
Apps, thenFuelio. Download them the same way.
On an iPhone
Fuelio for iPhone can export your data as a CSV file at any time and keep an automatic backup in iCloud Drive, its App Store page says. Export the CSV and send it to the computer by AirDrop, by e-mail or through iCloud Drive. We have not seen the iPhone app’s menus or its iCloud backup files ourselves, so the CSV export is the file to use here.
Which file to pick
- One vehicle: the Export CSV file. It is small and opens at once.
- Every vehicle in one go: the Backup All zip, or the
backup-syncfolder downloaded from Drive. A Backup All zip can be large because of the photos: one that the Logbook project describes held 45 photos in 213 MB. Fillbook reads only the CSV files in it and never opens the photos. - A few CSV files: choose them all at once on the page and switch between the vehicles.
What is inside a Fuelio file
Each CSV file holds one vehicle, in sections that start with a line such as ## Log. The developers who wrote importers for Fuelio’s files from real exports list these sections:
| Section | What it holds | In Fillbook |
|---|---|---|
## Vehicle | The name, units, plate, VIN, make, model, year and tanks | Shown, and the units decide how every figure is shown |
## Log | Every fill-up: date and time, odometer, amount, full or part tank, price, price per unit, place, notes, a missed fill-up and the tank | Read: consumption, costs, charts and the list of entries |
## CostCategories, ## Costs | Services, insurance, parking and other costs with their category, and repeating costs | Read, apart from the templates of repeating costs |
## FavStations | Your saved fuel stations | Left out |
## Pictures | The list of photos and the entry each one belongs to | Left out; the photos are never opened |
## Category | Trip categories, such as Private and Work | Left out |
There is no currency in the file, so Fillbook lets you type the label that goes after the amounts.
Open it
Go to Fillbook, choose the file or files, or drop them on the box. Your log is read in the browser tab on your own device and is never uploaded or changed.
Sources
- Fuelio: Backup files, importing data to Fuelio (the folders and menu names; checked 22 October 2026)
- Fuelio on the App Store: Fuelio: MPG & Mileage Tracker (CSV export and iCloud Drive backup on iPhone; checked 22 October 2026)
- Logbook: Phase 31, import from Fuelio (the CSV export and the Backup All zip, read from the developer’s own exports; checked 22 October 2026)
- Fuel-log: Fuelio .fuelio/CSV export format notes (the sections and the photos zip; checked 22 October 2026)
- lubelogger-fuelio-importer: README and code (the per-vehicle zips of the Google Drive backup; checked 22 October 2026)
- FuelioImport: the open-source converter that Fuelio’s help page points to (the unit codes in the vehicle row)
Fillbook is an independent tool by Peak Apps Studio and is not affiliated with Fuelio or Sygic.