Ethanol-petrol blend mileage calculator
Set how much mileage your car or bike gets with E0 petrol. Then focus on the chart above to see mileage you’ll get with E5, E10, E20, E25, E27, and E30 blends. Adjust the default 'Mileage Drop %' for different blends if needed.
type Mileage
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liter
Understanding Ethanol-Blended Petrol
Modern petrol is often mixed with ethanol, a renewable alcohol fuel made mainly from crops such as sugarcane, corn, wheat, and other plant materials. The amount of ethanol mixed with petrol is shown by the letter “E” followed by a number.
- E0 — 0% ethanol, 100% petrol
- E5 — 5% ethanol
- E10 — 10% ethanol
- E20 — 20% ethanol
- E25 — 25% ethanol
- E27 — 27% ethanol
- E30 — 30% ethanol
Increasing the ethanol percentage generally reduces dependence on crude oil imports and can lower greenhouse gas emissions, since ethanol is produced from renewable sources. However, ethanol contains less energy than petrol, so vehicles may experience a small reduction in fuel economy as the ethanol percentage increases. The exact impact depends on the vehicle, engine design, driving style, and road conditions.
Many modern petrol vehicles are designed to run safely on blends such as E10 or E20 (where approved by the manufacturer), while higher blends may require specially designed engines or flex-fuel vehicles. Always follow the fuel recommendations given in your vehicle owner's manual.
Common Ethanol Petrol Blends
| Blend | Ethanol | Petrol | Common use |
|---|---|---|---|
| E0 | 0% | 100% | Pure petrol with no ethanol |
| E5 | 5% | 95% | Used in many European countries |
| E10 | 10% | 90% | Widely used across North America, Europe, Australia, and many Asian countries |
| E20 | 20% | 80% | Increasingly used in countries like India |
| E25 | 25% | 75% | Common in Brazil |
| E27 | 27% | 73% | Standard petrol blend in Brazil |
| E30 | 30% | 70% | Used in limited markets and pilot programs |
Frequently Asked Questions
What does E10 petrol mean?
E10 petrol contains 10% ethanol and 90% petrol by volume.
What is E20 petrol?
E20 contains 20% ethanol and 80% petrol.
What is the difference between E10 and E20?
E10 has 10% ethanol while E20 has 20%. E20 usually delivers slightly lower fuel economy.
Does ethanol reduce mileage?
Generally yes, because ethanol contains less energy than petrol.
Does ethanol increase engine power?
Not necessarily. Benefits are mainly seen in engines designed for higher ethanol blends.
Is ethanol blended petrol safe for cars?
Yes, if the blend is approved by the vehicle manufacturer.
Can I mix E10 and E20 petrol?
Yes. Mixing creates an intermediate ethanol percentage.
Can I mix E0 petrol with E20 petrol?
Yes. The resulting blend has a lower ethanol percentage than E20.
Which petrol gives the best mileage?
E0 generally provides the highest energy content and best mileage.
Why is ethanol added to petrol?
To reduce oil imports, lower emissions, support agriculture, and improve sustainability.
Does ethanol damage engines?
Not when used within the manufacturer's approved ethanol limits.
Can motorcycles use ethanol petrol?
Many modern motorcycles can use E10; E20 compatibility depends on the manufacturer.
Does ethanol improve octane rating?
Yes. Ethanol naturally has a high octane rating.
Why does ethanol affect fuel economy?
Because ethanol contains less energy per litre than petrol.
Can older cars use E20 petrol?
Not always. Check your owner's manual.
Can ethanol absorb water?
Yes. Ethanol is hygroscopic and absorbs moisture.
Is ethanol environmentally friendly?
Ethanol can help reduce fossil fuel use and lower certain emissions, particularly when produced sustainably. However, its overall environmental benefit depends on how it is produced, transported, and used. Moderate blends such as E10 are generally viewed as a practical way to reduce emissions while remaining compatible with many modern vehicles.
Popular Ethanol Blend Percentages Around the World
The exact ethanol content available at fuel stations can vary by region, fuel grade, and government policy. The table below shows commonly used standard petrol blends in different countries.
| Country | Common petrol blend |
|---|---|
| Brazil | E27 |
| India | E20 (now adopted nationwide) |
| United States | E10 |
| Canada | E10 |
| Australia | E10 |
| New Zealand | E10 (selected stations) |
| United Kingdom | E10 |
| Germany | E10 |
| France | E10 |
| Spain | E10 |
| Italy | E10 |
| Netherlands | E10 |
| Belgium | E10 |
| Sweden | E10 |
| Norway | E10 |
| Finland | E10 |
| Denmark | E10 |
| Ireland | E10 |
| Poland | E10 |
| Czech Republic | E10 |
| Austria | E10 |
| Hungary | E10 |
| Slovakia | E10 |
| Portugal | E10 |
| Japan | Mostly E0 to E10 |
| South Korea | Mostly E0 |
| China | Varies by province, commonly E10 |
| Thailand | E10, E20, and E85 |
| Philippines | E10 |
| Indonesia | Mostly E5 to E10 |
| Argentina | E12 |
| Paraguay | E24 |
| Colombia | E10 |
| Peru | E7.8 to E10 |
| Uruguay | E10 |
Why Use an Ethanol Petrol Blend Calculator?
Our ethanol blend calculator helps you:
- Estimate your expected fuel mileage.
- Compare the mileage of different fuel blends side by side.
- Understand how a higher ethanol blend affects fuel economy.
Simply enter the mileage you get with E0 ethanol-free petrol and then see the Live Comparison Chart above. Drag the mileage slider to see the values change in real time.