Mileage Calculator: Track Your Vehicle’s Real Fuel Efficiency
ARAI Mileage vs Real-World: The 20–30% Gap
ARAI-certified mileage is tested under lab conditions — no AC, no traffic, constant speed. Real-world mileage is typically 20–30% lower. A car rated at 22 kmpl by ARAI usually delivers 15–18 kmpl in city driving. Always measure your actual mileage.
How to Measure Accurately (Tank-to-Tank Method)
- Fill your tank to the brim. Note the odometer reading.
- Drive normally until you need to refuel.
- Fill to the brim again. Note litres added and new odometer reading.
- Mileage = (Odometer difference) / Litres added
Example: Odometer went from 45,000 to 45,420 km. Filled 28 litres. Mileage = 420/28 = 15 kmpl.
Tips to Improve Mileage by 10–15%
- Tyre pressure: Under-inflated tyres reduce mileage by 3–5%. Check weekly.
- Smooth driving: Aggressive acceleration and braking burns 20–30% more fuel
- AC usage: AC can reduce mileage by 10–20% in city driving
- Speed: Optimal efficiency is typically at 45–65 kmph. Above 80 kmph, every 10 kmph increase reduces efficiency by ~10%
- Weight: Remove unnecessary items. Every 50 kg extra load reduces mileage by ~2%
Track your vehicle’s efficiency over time with the mileage calculator.