With the government pushing for cleaner fuels, E20 petrol—a blend of 20% ethanol and 80% petrol—is now becoming the new standard at fuel stations. While it's better for the environment, many drivers are noticing a drop in mileage. But don’t worry—there are ways to maximize your fuel efficiency without spending big.
1. ⚙️ Check Tyre Pressure Regularly
Why it matters:
Low tyre pressure increases rolling resistance, making your engine work harder and burn more fuel—especially noticeable with ethanol-blended fuels like E20.
What to do:
· Check tyre pressure at least once a week.
· Inflate as per manufacturer recommendation (check the sticker on the driver-side door frame).
· Don’t forget the spare tyre!
✅ Pro Tip: Even 1 psi drop in pressure can reduce mileage by 1-2%.
2. 🧯 Clean or Replace Your air Filter
Why it matters:
A dirty air filter restricts airflow, impacting combustion efficiency—especially important with E20 which has a lower energy density than regular petrol.
What to do:
· Inspect your air filter every 5,000–10,000 km.
· Replace it if it looks dusty or clogged.
· High-performance or washable filters can help long-term.
✅ Better airflow = Better fuel burn = Improved mileage.
3. 🕹️ Drive Smoothly: Avoid Rapid Acceleration & Hard Braking
Why it matters:
E20 fuel burns slightly faster, so aggressive driving will make your mileage drop even more dramatically.
What to do:
· Accelerate gradually and maintain a steady speed.
· Use engine braking and avoid sudden halts.
· Use cruise control (if available) on highways to maintain efficiency.
✅ Smooth driving can improve mileage by 10–15%.
4. 🛢️ Use Manufacturer-Recommended Engine Oil
Why it matters:
E20 fuel burns hotter and can affect engine performance if you’re not using the right grade of engine oil.
What to do:
· Switch to low-friction, synthetic oils that are E20 compatible.
· Stick to service intervals. Don’t wait too long for an oil change.
✅ Better lubrication helps the engine run smoother and more efficiently.
5. 🔌 Get Your ECU (Engine Control Unit) Updated
Why it matters:
Older vehicles not calibrated for E20 may not burn fuel optimally, resulting in poor combustion and reduced mileage.
What to do:
· Visit your authorized service center and ask if there's an ECU update available for E20 compatibility.
· Some newer models receive software updates to optimize performance with ethanol-blended fuels.
✅ An updated ECU can adapt fuel injection timing for E20, restoring lost mileage.
⚠️ Bonus Tip: Avoid Overloading & Excess Idling
· Remove unnecessary weight (roof racks, heavy luggage)
· Avoid long idling periods – turn the engine off if stopped for over a minute
🚗 Quick Summary: How To Improve Mileage on E20 Petrol
Tip
Why It Helps
✅ Maintain tyre pressure
Reduces rolling resistance
✅ Clean air filter
Improves combustion
✅ Smooth driving
Lowers fuel consumption
✅ Use correct engine oil
Optimizes engine efficiency
✅ Update ECU
Better fuel-air ratio for E20
🔋 Final Thought:
E20 petrol may slightly reduce mileage due to its lower energy content, but with these adjustments, you can regain lost efficiency and even stretch your fuel further than before.
Disclaimer:
The views and opinions expressed in this article are those of the author and do not necessarily reflect the official policy or position of any agency, organization, employer, or company. All information provided is for general informational purposes only. While every effort has been made to ensure accuracy, we make no representations or warranties of any kind, express or implied, about the completeness, reliability, or suitability of the information contained herein. Readers are advised to verify facts and seek professional advice where necessary. Any reliance placed on such information is strictly at the reader’s own risk.
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