The cost question is over. On this site's own fuel assumptions an electric car runs at about a fifth of a petrol car's cost per kilometre if you charge at home, and still beats diesel if you charge entirely on the highway. There is no reasonable arithmetic that makes petrol cheaper to run.
So the interesting question is the other one, and almost nobody puts a number on it. How many hours does a long trip cost you, and on which routes is that trade worth making? That is what this article is about.
Running cost per kilometre, all four fuels
These are the default efficiencies and the seeded fuel prices behind our fuel cost calculator, applied to one 590 km journey — the road distance on our Mumbai to Goa route.
| Fuel | Efficiency | Price | Cost per km | 590 km |
|---|---|---|---|---|
| Petrol | 15 km/l | Rs 105/l | Rs 7.00 | Rs 4,130 |
| Diesel | 20 km/l | Rs 93/l | Rs 4.65 | Rs 2,744 |
| CNG | 25 km/kg | Rs 78/kg | Rs 3.12 | Rs 1,841 |
| Electric, charged at home | 6 km/kWh | Rs 9/kWh | Rs 1.50 | Rs 885 |
| Electric, public fast charging | 6 km/kWh | Rs 18–24/kWh | Rs 3.00–4.00 | Rs 1,770–2,360 |
Two things in that table are worth sitting with.
The first: an EV charged entirely on public fast chargers costs about the same per kilometre as CNG, and still undercuts diesel. The worst realistic EV case beats the best realistic diesel case. That is how large the gap has become.
The second: the gap between home charging and highway charging is roughly 2x to 2.7x. For someone whose driving is commuting, that barely matters. For someone planning a 1,200 km trip, it is the whole story — because a long trip is, by definition, the one case where you cannot charge at home.
The honest long-route calculation
The 6 km/kWh figure in the table is a mixed-use number. On a highway at 90 to 100 km/h with four people, luggage and the air conditioning on, most EVs sold in India return something closer to 5 to 5.5 km/kWh. Aerodynamic drag rises with the square of speed, and nothing about an electric motor exempts it from that.
So here is the same 590 km run worked properly, for a car with a 40 kWh usable battery:
Rs 1,700 against Rs 4,130 for the same journey in a petrol car. You saved Rs 2,430, and that is real money — on this site's beach benchmarks it is a night in a budget hotel room with change left over, or half a night in a mid-range one.
Now the other side of the ledger, using the same inputs.
What the charging stops cost in hours
You need 67 kWh from public chargers. A 50 kW DC fast charger does not deliver 50 kW for the whole session — the rate tapers sharply above about 80% state of charge, so a realistic average across a session is more like 35 kW.
| 590 km, four people | Driving | Stops | Door to door |
|---|---|---|---|
| Petrol or diesel car | 11–12 h | 0.5 h | About 12 h |
| CNG car | 11–12 h | 0.5–1.5 h | 12–13 h |
| Electric car | 11–12 h | 3 h | About 15 h |
Rs 2,430 saved, two and a half hours spent. That is the trade, stated plainly. For four people sharing one vehicle it works out at roughly Rs 600 each for about 40 minutes each. Some people will take that deal happily. Others will not, and both are reasonable.
The CNG row carries a similar asterisk for a different reason: pumps are concentrated in particular corridors and a single queue at the only station for 200 km can cost you an hour. Our road trip costs nobody budgets for guide makes the general version of this point — the lines that do not appear on a receipt are often the ones that decide whether a trip was pleasant.
Why three hours is the optimistic figure
The calculation above assumes every charger you planned on is working, free and at the rated speed. On a long Indian route in 2026 that is an optimistic assumption rather than a safe one.
- A charger that is listed is not a charger that works. Always identify two options at each planned stop, not one.
- Queues are the real variable. One car ahead of you at a single-gun 50 kW charger can add 40 minutes with no warning.
- Slow chargers are a trap on a long route. A 15 kW AC unit is fine overnight at a hotel and useless at a highway halt — it would take over four hours to do what the sum above gives 35 minutes.
- Hills eat range. Regeneration gives some of it back on the way down, but a climb to a hill station can cut your effective range by 30% or more.
- Air conditioning in May is not optional. Budget 10% of range for it rather than pretending otherwise.
Which trips an EV suits today
| Trip shape | Verdict | Why |
|---|---|---|
| Under 250 km each way, hotel has a charger | Ideal. | One charge out, overnight charge at the hotel, one charge back. Zero added time. |
| Major expressway corridors | Good. | Charger density on the busiest highways is now reasonable and the stops are predictable. |
| 250–600 km on a well-served route | Workable. | Two or three stops, two to three hours added. Fine if you were stopping for meals anyway. |
| Metro to metro, 300–400 km | Good. | Chargers at both ends and in between, and the saving on a route you do often is substantial. |
| Hill stations with uncertain power | Caution. | Range penalty on the climb plus charging you cannot count on at the top. |
| Long remote routes — Ladakh, Spiti, deep North East | No. | Our Delhi to Ladakh guide describes a 350 km gap between fuel pumps. There is no charging answer to that yet. |
| Anything on a fixed deadline | No. | A broken charger is a two-hour problem, and a deadline turns that into a crisis. |
The costs this comparison deliberately excludes
Everything above is running cost. It is not the cost of owning the vehicle, and that distinction matters because the purchase price is where most of the petrol-versus-EV difference actually sits.
- Purchase price. An EV typically costs noticeably more up front than a comparable petrol car, and the running saving is what pays that back over years, not over one trip.
- Battery replacement. Outside warranty this is the largest single component cost on the vehicle. It is nobody's running cost until it happens.
- Home charger installation. A one-off, and the thing that unlocks the Rs 1.50 per km figure in the first place.
- Wear and tear. This site budgets Rs 2 to Rs 3 per kilometre for tyres, servicing, brakes and distance-related depreciation on any car. EVs are easier on brakes because of regeneration and harder on tyres because of weight and torque, so the figure does not change much.
Add that Rs 2.50 wear line and the picture flattens considerably: Rs 9.50 per km for petrol against Rs 4.00 for a home-charged EV. Still less than half, but a long way from the "one fifth the cost" claim that circulates. The car versus train break-even works the same way for an EV, just with a smaller fuel term — and a cheaper car makes the break-even against a train ticket fall, so an EV wins against the train at a lower passenger count than a petrol car does.
A worked break-even you can redo
Four people, 590 km one way, the full cost of driving rather than just the energy:
| Line | Petrol | EV, mixed charging |
|---|---|---|
| Energy or fuel | Rs 4,130 | Rs 1,700 |
| Toll, 450 highway km at Rs 2 | Rs 900 | Rs 900 |
| Wear at Rs 2.50 per km | Rs 1,475 | Rs 1,475 |
| One way, whole car | Rs 6,505 | Rs 4,075 |
Which is a useful reality check. On a long route against a sleeper ticket, no car wins, electric or otherwise. The EV saving is real and it is not large enough to change that answer — it changes the answer against a Volvo bus or a flight, not against a train. Fares here are estimates derived from published per-kilometre tariff structures, not bookable prices.
Questions people ask
Is an EV road trip actually cheaper than the train for a family?
For four people on a long route, usually not — the numbers above show why. For four people on a 200 km route where the train has fixed charges and the EV has almost no energy cost, frequently yes. Run both in the mode comparison for your own distance.
How much range should I plan around?
About 70% of the claimed figure on a highway with the air conditioning on and a full load. If the brochure says 400 km, plan 280. Planning around the brochure number is the single most common reason people have a bad first EV trip.
Does fast charging damage the battery?
Repeated fast charging as a daily habit is harder on a pack than slow charging. A handful of fast charges on a road trip two or three times a year is what the system is designed for. This is a usage-pattern question, not a one-trip question.
What about charging at the hotel?
This is the thing that makes or breaks an EV trip, far more than highway chargers. An ordinary socket overnight adds enough for local sightseeing the next day, and it costs domestic tariff rather than highway tariff. Ask specifically before you book, and ask what kind of socket.
Is CNG a better compromise for long trips?
On cost per kilometre they are now close, as the first table shows. CNG refuels in minutes, which is its real advantage, but the station network is corridor-shaped and a queue can cost you an hour. Neither is clearly better — it depends entirely on which network covers your route.
Should I rent a petrol car for the one long trip a year?
It is a genuinely sensible answer that people dismiss too quickly. If an EV fits 95% of your driving and fails the one annual road trip, renting for that week is cheaper and simpler than buying the wrong car for the other 51 weeks.
Why does this site use Rs 9 per kWh for electricity?
It is a mid-range domestic slab rate across Indian states, held in the database with a review date rather than hardcoded. Your own tariff may be meaningfully lower or higher, and slab structures mean an EV can push your household consumption into a dearer band. Put your actual per-unit rate into the fuel cost calculator — it changes the per-kilometre figure more than anything else on this page.