Ethanol or gasoline: which is worth more?
Enter the prices and instantly see whether ethanol or gasoline is the better deal.
Better choice
⛽ Ethanol
Ethanol/gasoline ratio64.3%
Advantage threshold70%
Saving per equivalent liter$0.33
Rule of thumb: ethanol pays off when its price is up to 70% of gasoline (varies by car).
How the calculation works
Ethanol yields fewer kilometers per liter than gasoline, so it's not just about price — use the 70% rule.
ratio = ethanol price ÷ gasoline price
If the ratio is 70% or less, ethanol wins. Above that, gasoline is cheaper per kilometer.
Frequently asked questions
Why 70%?
Because ethanol yields on average about 70% of gasoline per liter. More efficient cars can reach 75%.
Updated on June 17, 2026 · by Rafael Rossi · Methodology & sources