EV vs Petrol Savings Calculator

Overview

The EV vs Petrol Savings Calculator helps you compare the cost of owning and operating an electric vehicle (EV) versus a traditional petrol vehicle. By entering your driving habits and local fuel prices, you can see exactly how much money you could save by switching to an electric vehicle over the ownership period.

How It Works

The calculator compares the running costs of both vehicle types based on:

• Monthly Distance: How many kilometers you drive each month
• Ownership Duration: How long you plan to own the vehicle
• Fuel Efficiency: Petrol vehicle mileage (kmpl) and EV efficiency (km/kWh)
• Fuel Costs: Petrol price per litre and electricity cost per unit (kWh)

Calculation Formula

Monthly Petrol Cost:

$$\text{Monthly Petrol Cost} = \frac{\text{Monthly Distance}}{\text{Petrol Mileage}} \times \text{Petrol Price}$$

Monthly EV Cost:

$$\text{Monthly EV Cost} = \frac{\text{Monthly Distance}}{\text{EV Efficiency}} \times \text{Electricity Cost}$$

Monthly Savings:

$$\text{Monthly Savings} = \text{Monthly Petrol Cost} - \text{Monthly EV Cost}$$

Yearly Savings:

$$\text{Yearly Savings} = \text{Monthly Savings} \times 12$$

Total Lifetime Savings:

$$\text{Total Savings} = \text{Yearly Savings} \times \text{Ownership Duration}$$

Usage Guide

Step 1: Enter Your Driving Habits

• Monthly Distance: Enter the average number of kilometers you drive per month. For example, if you commute 25 km daily to work, that's approximately 750 km/month.

Step 2: Set Ownership Duration

• Ownership Duration: Enter how many years you plan to keep the vehicle. Common ownership periods are 5-10 years.

Step 3: Enter Petrol Vehicle Details

• Petrol Vehicle Mileage: Enter the fuel efficiency of your petrol car in kilometers per litre (kmpl). Most cars range from 12-20 kmpl.
• Petrol Price: Enter the current price of petrol per litre in your currency (e.g., ₹100).

Step 4: Enter EV Details

• EV Efficiency: Enter the electric vehicle's efficiency in kilometers per kilowatt-hour (km/kWh). Most EVs range from 5-7 km/kWh.
• Electricity Cost: Enter the cost of electricity per unit (kWh) from your electricity bill (e.g., ₹8).

Step 5: Calculate

Click the "Calculate" button to see your potential savings broken down by month, year, and total ownership period.

Example Calculation

Inputs:

• Monthly Distance: 1000 km
• Ownership Duration: 10 years
• Petrol Mileage: 15 kmpl
• Petrol Price: ₹110/litre
• EV Efficiency: 6 km/kWh
• Electricity Cost: ₹8/kWh

Results:

• Monthly Petrol Cost: 1000 ÷ 15 × 110 = ₹7,333
• Monthly EV Cost: 1000 ÷ 6 × 8 = ₹1,333
• Monthly Savings: ₹7,333 - ₹1,333 = ₹6,000
• Yearly Savings: ₹6,000 × 12 = ₹72,000
• Total 10-Year Savings: ₹72,000 × 10 = ₹7,20,000

Important Considerations

Factors Not Included

This calculator focuses on fuel/energy costs only. It does not include:

• Vehicle purchase price difference
• Insurance costs
• Maintenance costs (EVs typically have lower maintenance)
• Road tax and registration fees
• Battery replacement costs (if applicable)
• Depreciation
• Charging infrastructure costs (home charger installation)

Additional EV Benefits

• Lower Maintenance: EVs have fewer moving parts and don't require oil changes
• Tax Benefits: Many regions offer tax incentives for EV buyers
• Environmental Impact: Zero tailpipe emissions
• Smoother Drive: Instant torque and quiet operation

Tips for Maximum Savings

1. Charge at Home: Home charging is typically cheaper than public charging stations
2. Off-Peak Charging: Some electricity providers offer lower rates during off-peak hours
3. Solar Panels: If you have solar panels, your electricity cost could be even lower
4. Driving Style: Efficient driving habits benefit both vehicle types but EVs can recover energy through regenerative braking

Frequently Asked Questions

Q: Are EVs always cheaper to run?

A: In most cases, yes. EVs are generally 60-70% cheaper to run than petrol vehicles due to lower energy costs and reduced maintenance requirements.

Q: What if electricity prices increase?

A: Even with electricity price increases, EVs typically remain cheaper to operate than petrol vehicles. You can re-run this calculator with different price scenarios.

Q: How accurate is this calculator?

A: This calculator provides estimates based on the values you input. Actual savings may vary based on driving conditions, weather, and vehicle-specific factors.

Q: Should I include maintenance savings?

A: This calculator focuses on fuel costs only. EV maintenance is typically 30-40% lower than petrol vehicles, which would increase your total savings even further.

Conclusion

Switching to an electric vehicle can provide significant long-term savings on fuel costs. Use this calculator to understand your potential savings and make an informed decision about your next vehicle purchase.