Fuel Log App
Written by Muneeb Rana · Last updated 21 October 2026
Quick answer: CarO is a fuel log app for iPhone and Android. Record each fill-up with the cost, odometer reading, fuel type and units, and save favourite stations. CarO calculates MPG, estimates when you'll need to refuel next, and shows a refueling report for each car, so you can see what fuel really costs per month and per distance.
TL;DR
- Log cost, odometer, fuel type, units, station.
- Litres or gallons, kilometres or miles, including electricity for EVs.
- MPG, a next-refuel estimate and a refueling report.
- Works for multiple cars and drivers.
CarO's fuel log app turns each fill-up into a 20-second entry, and turns months of entries into a clear picture of fuel spending.
What you can log
| Field | Example |
|---|---|
| Date and odometer | 12 Mar, 48,250 |
| Amount and units | 11.2 gal or 42.4 L |
| Price and total cost | $3.15/gal, $35.28 |
| Fuel type | Regular, premium, diesel, electricity |
| Distance units | Kilometres or miles |
| Station | Favourite stations saved |
CarO supports litres and gallons, and kilometres and miles. Fuel types include petrol, diesel and electricity, so you can log EV charging in the same fuel log.
What CarO shows you
A refueling report per car, fuel spending over time, MPG from your fill-ups, and an estimate of when you'll need to refuel next. The method behind the number is in how to calculate MPG, and you can check a single tank with the MPG calculator.
Fuel in context
Fuel is one line in the car expense tracker; CarO's reports show it next to services and other costs. Plan trips with the fuel cost calculator and read how to keep a fuel log.
Compare apps
Want a different approach? See best fuel log apps and CarO vs Fuelly.
Download CarO free on the App Store or Google Play. Free with ads; optional in-app purchases.
Sources
- App Store: CarO・Car Care・Maintenance log: apps.apple.com (accessed 21 October 2026)
- Google Play: Car Maintenance Tracker - CarO: play.google.com (accessed 21 October 2026)
- FuelEconomy.gov: Find and Compare Cars: www.fueleconomy.gov (accessed 21 October 2026)
Disclaimer: CarO and this website give general car-care information, not professional advice. Maintenance intervals and specifications vary by vehicle, so always follow your owner's manual and a qualified mechanic. Mileage and cost figures are estimates; check local tax rules before using any log for deductions.
FAQ
What is a fuel log app?
An app that records each fill-up (date, odometer, amount, price) so you can track fuel costs and economy over time.
Does CarO calculate MPG?
Yes. CarO calculates MPG from your fill-ups. You can also use our free MPG calculator.
Can I log fuel for more than one car?
Yes. CarO supports multiple cars and drivers.
Can I save my favourite gas stations?
Yes. CarO lets you save favourite stations for quicker entries.
Is the CarO fuel log free?
CarO is free to download with ads, with optional in-app purchases.