How do I calculate my monthly petrol expense in India? ▼
Use this formula: Monthly Distance (km) ÷ Mileage (km/l) × Petrol Price (₹/l) = Monthly Petrol Expense. For example, if you drive 1,500 km/month in a car with 15 km/l mileage, and petrol costs ₹108/litre in your city, your monthly expense = 1500 ÷ 15 × 108 = ₹10,800. Our calculator above does this instantly as you type.
What is the average fuel cost per km for petrol cars in India? ▼
For a typical petrol car getting 15 km/l at ₹105–112/litre (2024–25 prices), the running cost is ₹7–7.5 per km. A fuel-efficient hatchback like Maruti Alto or i10 can reduce this to ₹5.5–6/km, while SUVs with 10–12 km/l can cost ₹9–11/km in fuel alone.
Is CNG cheaper than petrol for daily commuting in India? ▼
Yes, significantly. CNG costs approximately ₹3–4 per km vs ₹7–8/km for petrol, making it 50–60% cheaper per kilometre. However, CNG is available mainly in metro cities (Delhi, Mumbai, Pune, Ahmedabad, Lucknow, etc.). If your city has CNG infrastructure and you drive 1,200+ km/month, the monthly saving can exceed ₹5,000–6,000.
How much does it cost to run an electric vehicle (EV) per km in India? ▼
Home charging in India costs ₹8–10 per kWh. Most EVs achieve 5–7 km/kWh, giving a running cost of ₹1.2–2 per km — roughly 75–80% cheaper than a petrol car. Public fast-charging typically costs ₹15–25/kWh, raising it to ₹2.5–5/km, still far below petrol. Over 1,500 km/month, EVs save ₹8,000–12,000 compared to petrol cars.
How do fuel prices differ between cities in India? ▼
Fuel prices vary across Indian states due to local VAT and cess. As of mid-2025: Delhi has among the lowest petrol prices (~₹95/l), while Mumbai (₹106/l), Chennai (₹102/l) and Bhopal (₹108/l) tend to be higher. Select your city in the calculator above to auto-fill current approximate prices for your location.
What is the CNG vs petrol running cost difference per month? ▼
For a driver covering 1,500 km/month: Petrol (15 km/l @ ₹107/l) = ₹10,700/month. CNG (25 km/kg @ ₹85/kg) = ₹5,100/month. Monthly saving = ₹5,600. Annual saving = ₹67,200. The CNG kit conversion (factory-fitted or aftermarket) typically pays for itself within 12–18 months for moderate-to-high mileage drivers.
How do I reduce my daily commute fuel cost? ▼
Top strategies for Indian conditions: (1) Maintain correct tyre pressure — under-inflation reduces mileage by up to 3%. (2) Service your engine regularly — dirty air filters alone cut mileage by 10%. (3) Avoid idling in traffic — switch off if stopped for 30+ seconds. (4) Drive at 40–60 km/h where possible — highway speeds above 80 km/h dramatically increase consumption. (5) Use AC only when necessary — it can reduce mileage by 8–10%.
Does fuel calculator work for bikes and two-wheelers in India? ▼
Absolutely. Just enter your bike's mileage (typically 40–60 km/l for commuter bikes, 25–35 km/l for sports/premium bikes) and your monthly riding distance. The calculator works for all vehicles — cars, bikes, scooters, SUVs, trucks, and EVs. For a daily bike commuter doing 800 km/month at 45 km/l and ₹105/l, monthly petrol cost = ₹1,867.
How Does This Monthly Petrol Expense Calculator Work?
This fuel cost calculator for India uses a simple three-variable formula to compute your exact running cost: Monthly Distance (km) ÷ Mileage (km/l) × Fuel Price (₹/l) = Monthly Fuel Expense. As you type in any field, the results update in real time — no form submission, no page reload. Select your city from the dropdown and the current approximate fuel price auto-fills based on your state's VAT and central excise data.
The tool also computes CO₂ emissions for each fuel type (petrol: 2.31 kg/l, diesel: 2.68 kg/l, CNG: 2.75 kg/kg) so you can see your environmental footprint alongside your wallet impact.
CNG vs Petrol Running Cost India — Which Wins?
For high-mileage urban commuters in CNG-available cities, the math strongly favours CNG. A typical Maruti Suzuki S-CNG or Tata Tiago CNG delivers 26–28 km/kg at CNG prices of ₹75–92/kg, giving a running cost of under ₹3.5/km. Compare that to a petrol hatchback at ₹7–7.5/km and you're looking at savings of ₹4 per km. For a 1,200 km/month commuter, that's ₹4,800/month or ₹57,600/year saved.
The caveat: CNG infrastructure is concentrated in Delhi-NCR, Mumbai, Pune, Ahmedabad, Gujarat cities, and select highway corridors. Use the Switch & Save panel above to calculate your personal savings potential.
EV Running Cost vs Petrol — The Real India Picture
India's EV revolution is rewriting the mileage cost calculator equation. Home charging on a Tata Nexon EV, MG ZS EV, or Ola S1 Pro costs ₹1.2–2 per km at ₹8–10/kWh domestic tariffs. That's 75–80% cheaper than a comparable petrol SUV or scooter. However, public DC fast-charging at ₹18–25/kWh lifts this to ₹3–4.5/km — still cheaper than petrol but narrowing the gap. For accurate EV cost calculations, use the EV tab above and enter your home electricity tariff as the "fuel price".
Why Fuel Prices Vary Across Indian Cities
Petrol and diesel prices in India consist of a base price + central excise duty + state VAT/cess + dealer commission. The central component is uniform, but state VAT ranges from 17% (Delhi) to 35%+ (Maharashtra), creating significant city-to-city variation. As of mid-2025, Delhi petrol hovers around ₹95/l while Bhopal and Chennai see ₹105–109/l. Our city dropdown auto-fills current approximate prices — but for real-time rates, always check your nearest fuel station or the Indian Oil, BPCL, or HPCL app.
Tips to Reduce Your Daily Commute Fuel Cost
- Tyre pressure: Under-inflation of 5 PSI reduces mileage by 2–3%. Check monthly.
- Air filter & spark plugs: A clogged air filter can reduce efficiency by 10%. Service annually.
- Eco driving: Maintain 40–65 km/h on city roads; avoid aggressive braking and acceleration.
- AC usage: Reduces mileage by 8–15% in stop-and-go traffic. Park in shade when possible.
- Fuel quality: Consistently use branded petrol/diesel from major PSUs (IOCL, BPCL, HPCL) to avoid adulteration-related mileage loss.
- Route planning: Avoiding traffic hotspots via Google Maps or Waze can cut fuel consumption by 15–20% on high-congestion routes.
