⚡ EV Running Cost Calculator
Calculate EV energy usage & running costs accurately📊 EV Cost Summary
EV Running Cost Calculator — Compare Electric Car Costs vs Petrol & Diesel
Thinking of switching to an electric vehicle but unsure how much you’ll actually save on running costs? The EV Running Cost Calculator estimates your electric car’s cost per kilometre based on your vehicle’s energy consumption (kWh/100km) and your local electricity price — and compares it directly against an equivalent petrol or diesel car.
How It Works
EV Running Cost per km = (Battery Consumption in kWh per 100 km ÷ 100) × Electricity Price per Unit (kWh)
For example, an EV consuming 15 kWh per 100 km, charged at ₹8/unit, costs (15 ÷ 100) × 8 = ₹1.20 per km — compared to a petrol car at roughly ₹6-8 per km, depending on mileage and fuel price.
Who This Calculator Is For
This calculator is especially useful for two groups: individual buyers deciding between an EV and a petrol/diesel car, and fleet operators who need to estimate monthly running costs across multiple EVs for budgeting purposes.
For a fair comparison, the tool lets you enter both your EV’s energy consumption and a petrol/diesel vehicle’s mileage side-by-side, so you can see the actual rupee-per-km (or per-mile) difference — not just a general claim that “EVs are cheaper to run”.
EV vs Petrol: A Real Comparison
| Vehicle Type | Typical Consumption | Approx. Cost per KM* |
|---|---|---|
| Electric Car (EV) | 15 kWh / 100 km | ₹1.00 – ₹1.50 |
| Petrol Car | 15 km/l | ₹6.00 – ₹8.00 |
| Diesel Car | 18-20 km/l | ₹4.50 – ₹5.50 |
*Based on typical Indian electricity rates of ₹7-9/unit and fuel prices of ₹90-105/litre as of [DATE]. Update with your current local rates.
Keep in mind that running cost is only part of the total cost of ownership — purchase price, battery life/replacement cost, and maintenance also matter. This calculator focuses specifically on the day-to-day energy/fuel cost per kilometre.
Frequently Asked Questions
Is an EV cheaper to run than a petrol car?
Generally yes — EVs typically cost ₹1-2 per km to run compared to ₹6-8 per km for petrol cars, though the exact saving depends on your local electricity tariff and the EV’s energy efficiency.
How do I calculate my EV’s running cost per km?
Divide your EV’s energy consumption (kWh per 100 km, found in your vehicle’s spec sheet or trip computer) by 100, then multiply by your electricity price per unit (kWh).
What is a good kWh/100km figure for an electric car?
Most electric hatchbacks and sedans consume between 12-18 kWh per 100 km in real-world driving; larger SUVs may use 18-25 kWh per 100 km.
Does this calculator work for calculating EV fleet costs?
Yes — multiply the per-km running cost by your fleet’s total monthly kilometres to estimate combined monthly energy costs across multiple vehicles.