EV vs Petrol vs Diesel vs CNG Car Calculator

Compare the total cost of owning an electric car against petrol, diesel and (optionally) CNG — running cost per km, cost over your ownership period, and when an EV's higher price pays back.

Starting values are partly illustrative. Fuel prices, the electricity rate, GST and government incentives come from official sources (listed at the bottom of the page). Vehicle prices, mileage, range and resale value are placeholders — replace them with your own dealer quotes and the vehicles you're actually considering.
Your Driving & Energy Prices
State / UT
Delhi (New Delhi)▼
Petrol
₹/l
Diesel
₹/l
Pre-filled with New Delhi's prices (1 Jul 2026, official). Your city may differ by a few rupees.
Distance Driven
km/month
Ownership Period
years
Electricity Utility / Area
BRPL / BYPL / TPDDL
NDMC area
Household's monthly electricity use, with charging (units)
100
200
400
600
800
1000
Official rate for Delhi (BRPL / BYPL / TPDDL) at about 400 units a month: ₹4.44/unit. CEA's calculated average of fixed and energy charges plus electricity duty, from the tariff order in force since Oct 2021. It leaves out state subsidies, fuel-cost surcharges and meter rent, so your bill may differ.
Electricity Rate Used
₹/unit
Pre-filled with the official rate above. Replace it with your own: total bill ÷ units. Home charging is usually cheaper than public fast chargers.
Include CNG?
No
Yes, compare CNG too
⚡ Electric Car
Ex-Showroom Price
12.00L
₹
Registration & Insurance
70.0K
₹
Many states waive road tax on EVs.
Battery
kWh
Real-World Range
km
Charging Losses
%
Servicing & Insurance
18.0K
₹/yr
Resale After Ownership
%
State / Other Purchase Subsidy
₹
There is no central incentive for electric cars; some states offer one.
⛽ Petrol Car
Ex-Showroom Price
9.00L
₹
Road Tax, Registration & Insurance
1.10L
₹
From your on-road quote; road tax varies by state.
Mileage
km/l
Servicing & Insurance
25.0K
₹/yr
Resale After Ownership
% of ex-showroom
🛢️ Diesel Car
Ex-Showroom Price
10.00L
₹
Road Tax, Registration & Insurance
1.30L
₹
Mileage
km/l
Servicing & Insurance
28.0K
₹/yr
Resale After Ownership
% of ex-showroom
Lowest cost over 5 years
Electric
Electric vs Petrol: pays back after 3.3 years
Electric vs Diesel: pays back after 2.2 years
₹1.74L
less than the costliest option (Petrol)
Side by Side
PetrolDieselElectric
Upfront cost (incl. on-road costs)₹10.10L₹11.30L₹12.70L
Running cost per km₹6.38₹5.01₹0.59
Fuel / charging per month (year 1)₹6.4K₹5.0K₹592
Energy over 5 years₹4.07L₹3.19L₹37.7K
Servicing & insurance over 5 years₹1.25L₹1.40L₹90.0K
Resale value− ₹4.50L− ₹5.00L− ₹4.80L
Total cost of ownership₹10.92L₹10.89L₹9.18L ✓
All-in cost per km₹18.19₹18.15₹15.30
Cumulative Cost by Fuel Type
012345₹0₹4.00L₹8.00L₹12.00L₹16.00L
  • Petrol
  • Diesel
  • Electric
Year-by-Year Cumulative Cost
YearPetrolDieselElectric
Purchase₹10.10L₹11.30L₹12.70L
1₹11.12L₹12.18L₹12.95L
2₹12.15L₹13.08L₹13.20L
3₹13.22L₹14.00L₹13.46L
4₹14.30L₹14.94L₹13.72L
5₹15.42L₹15.89L₹13.98L
Cumulative cash spent: purchase price plus running, servicing and insurance costs, before any resale value.
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Official Figures Used
Petrol ₹102.12 and diesel ₹95.20 per litre in New Delhi, Delhi; every state and UT capital is pre-filled from the official table.
Electricity: ₹4.44/unit for Delhi (BRPL / BYPL / TPDDL) at about 400 units a month — CEA's effective domestic rate (fixed + energy charges + duty), tariff order in force since Oct 2021.
CNG: ₹86.98/kg in Delhi (NCT) (IGL website, 13 Oct 2026). Other cities aren't in the official table, so enter your local price.
GST: 5% on electric vehicles; 18% on small petrol/CNG cars (up to 1200cc, 4 m) and small diesel cars (up to 1500cc, 4 m); 40% on larger cars and SUVs, with no compensation cess. Ex-showroom prices already include GST.
Electric cars get no demand incentive under PM E-DRIVE, which covers two- and three-wheelers, ambulances, trucks and buses. Some states offer their own EV incentives or road-tax waivers; enter yours in the subsidy and on-road cost fields.
💡 Estimates only. Prices, mileage and range differ by model and driving style; energy prices change over time (the calculator lets fuel and electricity prices rise 3% a year by default). Servicing and insurance are held flat across the period.
Frequently Asked Questions
Is an electric car cheaper than petrol or diesel in India?
Per kilometre, charging at home is usually far cheaper than petrol or diesel. But electric cars cost more to buy, so the total over your ownership period depends on how far you drive, your electricity rate, resale value and the price gap. This calculator shows the full cost of each option and when the EV pays back.
Is there a government subsidy on electric cars?
Not from the central government's PM E-DRIVE scheme, which covers two-wheelers, three-wheelers, e-ambulances, e-trucks and e-buses but not private electric cars. Some states offer their own incentives or road-tax and registration concessions; enter whatever applies in the subsidy and on-road cost fields.
What GST applies to cars now?
Since 22 September 2025, electric vehicles attract 5% GST. Small petrol, CNG and LPG cars (up to 1200cc and 4 metres) and small diesel cars (up to 1500cc and 4 metres) attract 18%; larger cars and SUVs attract 40% with no compensation cess. Ex-showroom prices already include GST.
Where does the electricity rate come from?
It is pre-filled from the Central Electricity Authority's state-wise domestic "effective rate" (edition as on 31 March 2026): fixed and energy charges from your state regulator's tariff order, worked out for a household using a given number of units a month, plus electricity duty. Pick your utility or area and your household's monthly use (including the EV charging). It leaves out state subsidies, fuel-cost surcharges and meter rent, so if your own bill shows a different rate per unit, type it in.
Where does the CNG price come from?
CNG is priced by city and gas company and revised often, and there is no official all-India table. PPAC's monthly snapshot publishes the Delhi (IGL) and Mumbai (MGL) prices — ₹86.98 and ₹89.00 per kg as of 13 October 2026 — and the calculator pre-fills those for Delhi and Maharashtra. For any other city, enter today's price at your local station; CNG joins the comparison once you do.
Which petrol and diesel prices are used?
Pre-filled from PPAC's published table of retail prices at each state and UT capital (data from IOCL, 1 July 2026). Edit them to match your city.
Is my data stored or shared?
No. Everything runs in your browser. Scenarios you save are kept only in your own browser's storage.