🇮🇳 Fuel & Efficiency Calculator
Mileage & Fuel Cost Calculator
Calculate real-world fuel efficiency in km/l, cost per km, monthly fuel spend, and annual fuel budget in ₹.
Fill-up Details
Fuel Efficiency
kilometres per litre
L/100km
6.7
Cost per km
₹6.40
Fill-up Cost
₹0
Range (~42 L tank)
630
Representative Fuel Prices
City-average, indicative only - actual prices vary by state (VAT) and city. Check your local rate before budgeting.
How mileage is calculated.
L/100km = 100 ÷ (km/l)
Cost per km = Fuel Price ÷ km/l
Monthly Cost = Cost per km × Monthly Kilometres
What is average mileage in India?
The average new petrol car sold in India returns roughly 15–18 km/l combined (ARAI). Hatchbacks typically reach 18–22 km/l, sedans 14–18 km/l, SUVs 10–15 km/l, and diesel or CNG variants often exceed these figures.
Real-world vs ARAI mileage
Most drivers see 15–25% lower mileage than the ARAI-certified figure due to city traffic, AC use, cargo weight, and driving style. Use this calculator with your actual fill-up data for the most accurate result.
Frequently asked questions.
How do I calculate mileage from a fill-up?
Note your odometer when you fill up, drive normally, then fill up again (to full). Divide the kilometres you drove by the litres it took to refill the tank. That's your real-world mileage (km/l) for that tank.
What is good mileage for a car in India?
For petrol cars: 18+ km/l is excellent for a hatchback, 14–18 km/l is typical for a sedan, and below 10 km/l is common for large SUVs. Diesel cars usually run 3–5 km/l higher than their petrol equivalents. CNG and hybrid variants can exceed 25 km/l.
How much does fuel cost per month for an average Indian driver?
A driver covering ~1,000 km/month at 15 km/l and ₹96/litre petrol spends roughly ₹6,400/month, or about ₹76,800/year. Your actual cost depends on local fuel prices, which vary by state due to VAT.
How do I convert km/l to L/100km?
Use the formula: L/100km = 100 ÷ (km/l). So 15 km/l ≈ 6.7 L/100km. Lower L/100km means better efficiency - it's the reverse relationship of km/l.
Why is my real mileage lower than the ARAI rating?
ARAI (Automotive Research Association of India) figures come from controlled lab tests on a fixed cycle. Real-world driving involves traffic, AC use, cold starts, extra passengers/cargo, and city stop-and-go - all of which cut efficiency. It's normal to see 15–25% below the ARAI-certified number, which is why measuring your own mileage from a fill-up is more useful.
How can I improve my car's mileage?
The cheapest gains come from keeping tyres properly inflated, driving smoothly (gentle acceleration and braking), avoiding unnecessary idling in traffic, removing roof racks and excess weight, and keeping up with air filter and service intervals. Combining short trips so the engine runs warm also helps in city driving.