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EV vs Petrol Savings Calculator

Calculate how much you save by switching to an electric vehicle (EV) in Vietnam. Compare annual fuel costs, payback period, and 5-year net savings versus a petrol car.

km/year
L/100km
₫/L
kWh/100km
₫/kWh
₫

Fill in the fields above and click Calculate to see your results.

How to use

Calculate how much you save by switching to an electric vehicle (EV) in Vietnam. Compare annual fuel costs, payback period, and 5-year net savings versus a petrol car.

How it's calculated

Annual Petrol Cost

annual_km * petrol_consumption_per_100km / 100 * petrol_price_per_litre

Yearly fuel cost for the petrol vehicle

Annual EV Charging Cost

annual_km * ev_consumption_per_100km / 100 * electricity_price_per_kwh

Yearly electricity cost for the EV

Annual Savings

annual_km * petrol_consumption_per_100km / 100 * petrol_price_per_litre - annual_km * ev_consumption_per_100km / 100 * electricity_price_per_kwh

Annual fuel cost savings by driving an EV

Payback Period

ev_premium / (annual_km * petrol_consumption_per_100km / 100 * petrol_price_per_litre - annual_km * ev_consumption_per_100km / 100 * electricity_price_per_kwh)

Years to recoup the EV price premium through fuel savings

5-Year Net Savings

(annual_km * petrol_consumption_per_100km / 100 * petrol_price_per_litre - annual_km * ev_consumption_per_100km / 100 * electricity_price_per_kwh) * 5 - ev_premium

Net savings after 5 years, accounting for the EV price premium

Examples

15,000 km/yr: 7L/100km petrol vs 15kWh/100km EV, 50M premium

  • Annual Distance:15,000
  • EV Price Premium:50,000,000
  • Petrol Price:21,000
  • EV Energy Consumption:15
  • Electricity Price:2,000
  • Petrol Consumption:7

10,000 km/yr: 7L/100km petrol vs 15kWh/100km EV, 50M premium

  • Annual Distance:10,000
  • EV Price Premium:50,000,000
  • Petrol Price:21,000
  • EV Energy Consumption:15
  • Electricity Price:2,000
  • Petrol Consumption:7

Frequently Asked Questions

Is switching to an EV worth it in Vietnam?

For drivers covering 15,000+ km per year, switching to an EV like VinFast VF 5 or VF 8 can save 1–2 million VND annually on fuel alone. With a 50 million VND price premium, the payback period is typically 25–30 years at current electricity prices — making EVs more of an environmental choice than a financial one unless you drive very high mileage.

What is the electricity price for EV charging in Vietnam?

Vietnam's residential electricity price averages around 1,800–2,500 VND per kWh depending on consumption tier. Home charging overnight (off-peak) can be as low as 1,500 VND/kWh. Public fast chargers (VinFast V-GREEN network) charge around 3,858 VND/kWh. This calculator uses 2,000 VND/kWh as a blended average.

How does VinFast EV energy consumption compare to petrol cars?

VinFast VF 5 consumes approximately 13–15 kWh/100km, while VF 8 uses 18–22 kWh/100km. Compared to a petrol car at 7 L/100km (147,000 VND/100km at 21,000 VND/L), the VF 5 costs about 26,000–30,000 VND/100km — roughly 5x cheaper per kilometre for energy.

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