Savings & Comparisons
EV Savings Calculator
Calculate cumulative 1-year, 3-year, and 5-year operational savings over petrol.
Primary Metric: Estimated Annual Savings
Savings & Comparisons Deterministic Model v1.2
EV vs Petrol Cost Calculator
Compare operational expenditure between electric and internal combustion vehicles.
Comparison Parameters
Benchmark electric vs internal combustion Monthly Operational Savings ₹9,214.29 84.3% cheaper than petrol
Petrol Engine ₹7.29 / km ₹10,928.57 / mo
Electric Vehicle ₹1.14 / km ₹1,714.29 / mo
Cost Differential per km: ₹6.14 / km
Annual Fuel Savings: ₹110,571.43
5-Year Fuel Savings: ₹552,857.14
Mathematical Formula & Physical Model
Calculates the per-kilometer cost delta between internal combustion fuel consumption and electric powertrain energy draw.
1
EV Cost per km = (1 / EV Efficiency km/kWh) × Electricity Rate 2
Petrol Cost per km = Petrol Price / Petrol Mileage (km/L) 3
Savings per km = Petrol Cost per km - EV Cost per km 4
Monthly / Annual Savings = Savings per km × Distance Traveled Worked Example
Reference BenchmarkCompact Sedan Fuel vs Electric Benchmark
Comparing a petrol car (14 km/L at ₹102/L) against an EV (7.0 km/kWh at ₹8.00/kWh) over 1,500 km per month.
Petrol Price ₹102.00 / L
Petrol Mileage 14.0 km/L
EV Efficiency 7.0 km/kWh
EV Tariff ₹8.00 / kWh
Distance 1,500 km
Frequently Asked Questions
Why are EV running costs so much lower than petrol cars?
Electric traction motors convert over 85% to 90% of electrical energy into wheel motion, whereas internal combustion engines lose 65% to 75% of fuel energy as waste heat.
Does the comparison factor in regenerative braking?
Yes, regenerative braking recovery is already built into the overall efficiency metric (km/kWh) of the EV.