CNG vs EV: the two cheapest ways to run a car in India
CNG vs EV in India compared on running cost per km, purchase premium, refuelling/charging practicality, and break-even distance. Real numbers, 2026.
Updated 2026-08-04 · figures computed from the same engine as our fuel cost calculator
Electric (EV) costs ₹2 less per kilometre to run than cng — about ₹22,000 a year at 1,000 km a month. But it costs roughly ₹3,10,000 more to buy, so you need about 1,69,091 km — roughly 14.1 years of average driving — before you are actually ahead.
CNG
Cheapest running cost of any ICE option, but boot space is lost to the cylinder, power drops ~10%, and refuelling queues are long outside metros.
Electric (EV)
Lowest running cost by far when charged at home, near-zero servicing — but the highest purchase premium and charging access is the real constraint.
Running cost by how much you drive
| Monthly driving | CNG | Electric (EV) | You save |
|---|---|---|---|
| 500 km Light city use |
₹1,583/mo ₹19,000/yr |
₹667/mo ₹8,000/yr |
₹11,000/yr |
| 1,000 km Average commute |
₹3,167/mo ₹38,000/yr |
₹1,333/mo ₹16,000/yr |
₹22,000/yr |
| 1,500 km Heavy commute |
₹4,750/mo ₹57,000/yr |
₹2,000/mo ₹24,000/yr |
₹33,000/yr |
| 2,500 km Very high / commercial |
₹7,917/mo ₹95,000/yr |
₹3,333/mo ₹40,000/yr |
₹55,000/yr |
Fuel/energy cost only. Servicing, insurance and depreciation differ too — use the true cost of ownership calculator for the full picture.
How long until electric (ev) pays back
| If you drive | Break-even takes |
|---|---|
| 500 km/month | 28.2 years |
| 1,000 km/month | 14.1 years |
| 1,500 km/month | 9.4 years |
| 2,500 km/month | 5.6 years |
Break-even = the ₹3,10,000 purchase premium divided by the ₹2/km running-cost saving. If you plan to keep the car less time than this, the cheaper-to-buy option wins.
Common questions
Should I buy a CNG car or an electric car in India?
Electric (EV) costs ₹1,833 less per 1,000 km to run, but costs about ₹3,10,000 more to buy. You need roughly 1,69,091 km to break even — around 14.1 years at 1,000 km a month. Drive more than that and electric (ev) wins; drive less and cng is the cheaper overall choice.
What is the running cost per kilometre of cng vs electric (ev) in India?
At ₹76/kg and 24 km/kg, cng costs about ₹3 per km. Electric (EV) at ₹8/kWh and 6 km/kWh costs about ₹1 per km. That is a difference of ₹2 per kilometre, or ₹22,000 a year at 1,000 km a month.
How much can I save a year with electric (ev) over cng?
At 1,000 km a month you save about ₹22,000 a year. At 1,500 km a month it is roughly ₹33,000, and at 2,500 km a month about ₹55,000. These are fuel/energy costs only — servicing and insurance differences are on top.
What are the downsides of electric (ev)?
Lowest running cost by far when charged at home, near-zero servicing — but the highest purchase premium and charging access is the real constraint.
Other comparisons
Prices are indicative all-India averages and move daily — Delhi, Mumbai and Bengaluru typically differ ₹2–5 per litre from the national average. Mileage figures are realistic city-driving estimates, not ARAI claims.