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Physics 12 min read

Is an Electric Scooter Really Cheaper to Run Than Petrol?

Observation recorded
An Ather 450X electric scooter at a charger beside a Honda Activa at a petrol pump, with running totals of ₹1,273 against ₹8,170 after six months

Ask an electric scooter owner what charging costs and you will often hear a number that sounds like a typo: about twenty rupees for a full battery. Ask a petrol scooter owner what a fill-up costs and the answer is several hundred. Both are right. The real question is whether that difference per kilometre makes up for the higher price of the electric scooter, and how long it takes.

This post works it out with figures from maker spec sheets and road tests, using an Ather 450X and a Honda Activa 110 as the main pair, and a Tata Nexon EV and Nexon petrol for comparison. Every example opens in the EV vs petrol calculator, where you can type your own kilometres, petrol price and electricity tariff.

Quick answerYes. Charged at home at ₹7 a unit, an Ather 450X costs about ₹0.27 a km, against ₹1.70 a km for a Honda Activa at ₹102.12 a litre. At 800 km a month that saves about ₹13,800 a year, so the electric scooter's higher price comes back in roughly four to five years.

Is an electric scooter really cheaper to run than petrol?

Running cost per kilometre comes down to two divisions. For petrol, divide the price of a litre by the kilometres it takes you. For electricity, divide the battery energy by the range, allow for charging losses, and multiply by the price of a unit.

Worked example: Ather 450X against Honda Activa 110

Ather's spec sheet gives the 450X a 2.9 kWh battery and a TrueRange of 85 km in Ride mode. The Activa returned 60 km a litre in Autocar India's test. Petrol is ₹102.12 a litre in Delhi.

petrol=102.1260=₹1.70 a km\begin{aligned} \text{petrol} &= \dfrac{102.12}{60} \\ &= \text{₹}1.70\ \text{a km} \end{aligned}

The scooter uses 2.9 ÷ 85 = 0.0341 kWh a km from its battery. Charging loses about a tenth, so it draws 0.0341 ÷ 0.9 = 0.0379 units a km from the wall. At ₹7 a unit:

electric=0.0379×7=₹0.27 a km\begin{aligned} \text{electric} &= 0.0379 \times 7 \\ &= \text{₹}0.27\ \text{a km} \end{aligned}

The electric scooter costs about 16 percent of the petrol one per kilometre. At 800 km a month that is ₹212 of electricity against ₹1,362 of petrol, a saving of ₹1,149 a month.

An Ather 450X electric scooter with a green number plate plugged into a charger beside a Honda Activa 110 at a petrol pump: after 6 months and 4,800 km the electric scooter has cost ₹1,273 at ₹0.27 a km and the petrol scooter ₹8,170 at ₹1.70 a km, ₹6,897 saved
Figure 1. Six months and 4,800 km in: ₹1,273 of electricity for the Ather against ₹8,170 of petrol for the Activa. Open this in the calculator.

How much electricity does an electric scooter use?

Very little, by household standards. At 0.0379 units a km, 800 km a month adds about 30 units to the bill, about what a 1.5 ton AC uses in four and a half 8-hour days (see how many units a 1.5 ton AC uses per hour). A full charge of the 2.9 kWh battery takes about 3.2 units from the wall, or about ₹23 at ₹7 a unit.

The 10 percent charging loss is a round figure. When the Idaho National Laboratory benchmarked the onboard charger of a Chevrolet Volt, it measured about 90 to 92 percent efficiency from the wall socket to the battery's DC input, and the battery itself loses a little more. The calculator uses 90 percent by default, and you can change it.

Which range you divide by matters more. Indian two-wheelers are certified on the IDC test cycle, which is slow and gentle. Ather's spec sheet lists a certified range of 126 km for the 2.9 kWh 450X, but a TrueRange of 105 km in SmartEco mode and 85 km in Ride mode. Ola lists only the certified figure for the S1 Pro: 242 km from a 4 kWh battery. On that figure it uses 1.65 kWh per 100 km, half what the Ather uses in real riding, which says more about the test than the scooter.

An Ola S1 Pro on its certified range against a Honda Activa 110 over a year of 9,600 km: ₹1,232 of charging at ₹0.13 a km against ₹16,339 of petrol at ₹1.70 a km, ₹15,107 saved
Figure 2. The Ola S1 Pro on its certified range looks even cheaper, ₹0.13 a km, but real riding uses more. Open this in the calculator.

Even with the optimistic figure, the yearly saving only moves from ₹13,793 to ₹15,107. Most of the saving comes from the petrol you stop buying, not from how efficient the electric scooter is.

How long does an electric scooter take to pay back?

The electric scooter usually costs more to buy. Ather lists the 450X from ₹1,48,998, and Autocar India lists the Activa DLX at ₹84,272, a gap of ₹64,726 between these two listed prices. Your on-road quotes, subsidies and the variants you compare will change it.

Worked example: winning back the price gap

At 800 km a month the saving is ₹1,149 a month.

break-even=64,7261,149=56.3 months\begin{aligned} \text{break-even} &= \dfrac{64{,}726}{1{,}149} \\ &= 56.3\ \text{months} \end{aligned}

That is about 4.7 years and 45,000 km. At 1,500 km a month the saving is ₹2,155 a month and the gap comes back in 30 months. At 500 km a month it takes 90 months, 7.5 years.

So the answer to "is it cheaper" has two parts. Per kilometre, clearly yes. Over the life of the scooter, yes if you ride enough for the saving to cover the extra price before the battery needs attention. Ather's spec sheet lists a standard battery warranty of 3 years or 30,000 km, with longer cover as an add-on, which is worth comparing with your own break-even.

Does a slab tariff change the answer?

A little, and usually in the scooter's favour. Most Indian homes pay for electricity in slabs, and an electric scooter's 30 units a month sit on top of everything else the house uses. On Delhi's domestic slabs, set by the Delhi Electricity Regulatory Commission, a house that already uses 200 units pays ₹4.50 for the next ones.

The Ather 450X charged at home on the Delhi slab tariff, its 30 units a month falling in the ₹4.50 block: a year of 9,600 km costs ₹1,637 against ₹16,339 of petrol, ₹14,702 saved
Figure 3. On the Delhi slabs the scooter's units cost ₹4.50 each: ₹1,637 for a year against ₹16,339 of petrol. Open this in the calculator.

That brings the cost to ₹0.17 a km and the break-even to 52.8 months. A house that already uses 400 units a month would pay ₹6.50 a unit for the scooter, so check where your own bill sits. If you have rooftop panels, those units can cost even less; how many solar panels you need works through the sizing.

What about electric cars?

The same arithmetic works for cars, with bigger numbers on both sides.

Worked example: Tata Nexon EV against the Nexon petrol

Autocar India lists the Nexon EV's 45 kWh battery with Tata's real-world estimate of 350 to 375 km. Using 350 km, it uses 12.86 kWh per 100 km, or 0.1429 units a km from the wall. At ₹7 a unit:

electric=0.1429×7=₹1.00 a km\begin{aligned} \text{electric} &= 0.1429 \times 7 \\ &= \text{₹}1.00\ \text{a km} \end{aligned}

The petrol Nexon managed 13.9 km a litre on Autocar's highway test, so ₹102.12 ÷ 13.9 = ₹7.35 a km. At 1,000 km a month the EV saves ₹6,347 a month, ₹76,158 a year.

A Tata Nexon EV at a home-rate charger beside a Nexon petrol at a pump after a year of 12,000 km: ₹12,003 of electricity at ₹1.00 a km against ₹88,161 of petrol at ₹7.35 a km, ₹76,158 saved
Figure 4. A year of 12,000 km: ₹12,003 of home charging for the Nexon EV against ₹88,161 of petrol. Open this in the calculator.

The price gap is bigger too. Autocar lists the Nexon EV Creative 45 at ₹15.21 lakh and the petrol Creative+ S DK AMT at ₹11.62 lakh, about ₹3.59 lakh apart, so break-even takes about 4.7 years at 1,000 km a month.

Public fast charging changes the picture most. ChargeZone, a charging network, puts DC fast charging at ₹20 to ₹25 a kWh. At ₹22 the Nexon EV costs ₹3.14 a km, more than three times the home figure, and break-even stretches to about 7 years.

The Nexon EV charged only at public fast chargers at ₹22 a kWh: a year of 12,000 km costs ₹37,723 at ₹3.14 a km against ₹88,161 of petrol, still ₹50,438 saved
Figure 5. Charged only at ₹22 fast chargers, the Nexon EV costs ₹3.14 a km, still well under half the petrol cost. Open this in the calculator.
Price per unitAther 450XNexon EV
₹5₹0.19 a km₹0.71 a km
₹7₹0.27 a km₹1.00 a km
₹10₹0.38 a km₹1.43 a km
₹15₹0.57 a km₹2.14 a km
₹22₹0.83 a km₹3.14 a km

For comparison, petrol at ₹102.12 a litre costs ₹1.70 a km in the Activa and ₹7.35 a km in the Nexon. An electric scooter stays cheaper than petrol until electricity reaches about ₹45 a unit, which no tariff in India comes near.

EV against petrol working for the Ather 450X and Activa 110: 3.41 kWh per 100 km divided by 0.9 is 0.03789 kWh a km, 30.31 units a month cost ₹212.2 at ₹7, ₹0.2652 a km; petrol 102.12 ÷ 60 is ₹1.702 a km, ₹1,362 a month; ₹1,149 saved a month and ₹64,726 ÷ 1,149 = 56.31 months to break even
Figure 6. The calculator's working for the Ather and the Activa, from energy per km to break-even. Open this in the calculator.

What does this comparison leave out?

  • Servicing, insurance and tyres. Electric scooters have fewer moving parts and usually cost less to service, which would shorten the break-even.
  • Battery life and resale. A battery replacement outside warranty, or a weak resale price, would lengthen it.
  • How you ride. Sport modes, heavy loads and traffic raise the energy per km of both scooters.
  • Price changes. Petrol and electricity prices both move; the calculator uses today's figures for every year.

All the energy figures here are in kWh, the unit on your bill; joules, calories and kWh explained shows how it compares with the energy in a litre of petrol.

Try it yourself

Open the EV vs petrol calculator, choose a scooter or car, and type your monthly kilometres, your petrol price, your home tariff and how often you use fast chargers. It shows the cost per km of each, the savings a month and a year, the break-even on the price gap, and the working.

Sources

Frequently asked questions

Is an electric scooter cheaper to run than petrol?

Yes. An Ather 450X charged at home at ₹7 a unit costs about ₹0.27 a km, against ₹1.70 a km for a Honda Activa 110 at ₹102.12 a litre and 60 km a litre. That is about a sixth of the petrol cost.

How much does it cost to fully charge an electric scooter?

A 2.9 kWh battery takes about 3.2 units from the wall once charging losses of around 10 percent are included, so about ₹23 at ₹7 a unit. That is less than a quarter of the price of one litre of petrol at ₹102.12.

How long does an electric scooter take to pay back its higher price?

At 800 km a month, an Ather 450X saves about ₹1,150 a month on running costs against an Activa, so its price gap of about ₹64,700 comes back in about 4.7 years. At 1,500 km a month it takes about 2.5 years.

How many units does an electric scooter use per km?

An Ather 450X uses about 3.4 kWh per 100 km from its battery in Ride mode, or about 0.038 units per km from the wall. That is about 30 units for 800 km.

Is charging an EV at a public fast charger expensive?

Public DC fast chargers in India typically cost ₹20 to ₹25 a kWh, about three times a typical home unit. A Nexon EV charged only at fast chargers costs about ₹3.14 a km instead of ₹1.00, still well under half the cost of petrol.

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