Mileage Calculator
Calculate your vehicle's real-world fuel efficiency in kmpl and compare to ARAI certified mileage.
Fill up completely, drive, then fill up again. Enter the distance driven and the fuel added on the second fill.
Record odometer reading when you fuel up, drive, then record odometer again on the next fill and enter fuel added.
Understanding mileage measurements
Standard measure in India. Higher is better. Most petrol cars: 10–20 kmpl. Diesel: 12–22 kmpl. Two-wheelers: 35–70 kmpl.
Used in Europe and Australia. Lower is better. Inverse of kmpl. A 15 kmpl car uses 6.67 L/100km.
Used in USA and UK. Higher is better. 1 kmpl ≈ 2.352 US MPG. A 15 kmpl car = ~35 US MPG.
Frequently asked questions
Why is my actual mileage lower than the ARAI figure?
ARAI tests are conducted on a chassis dynamometer under controlled conditions — no wind, AC off, constant temperature. Real-world driving involves traffic, hills, AC use, variable speed, tyre wear and fuel quality differences. Expect 15–30% lower real-world mileage.
Which method is more accurate — full tank or odometer?
Both are equally accurate when done correctly. The full tank method requires you to fill up completely both times. The odometer method is more flexible but requires accurate odometer readings. Average 3–5 readings for a reliable figure.
How do I convert kmpl to mpg?
Multiply kmpl by 2.352 to get US MPG. Or use: MPG = kmpl × 0.621371 (miles/km) ÷ 0.264172 (gal/L). So 15 kmpl = 35.3 US MPG.
What factors affect fuel efficiency most?
Speed is the biggest factor — efficiency peaks at 60–80 km/h for most cars and drops significantly above 100 km/h. AC use reduces efficiency by 10–20%. Tyre pressure, engine condition, driving style (hard acceleration/braking) and air filter condition also matter.
How does L/100km relate to kmpl?
L/100km = 100 ÷ kmpl. So a car getting 20 kmpl uses 100 ÷ 20 = 5 L/100km. This measure is preferred in fuel efficiency standards because it scales linearly with actual fuel consumption.