Tata Sierra EV cost per km
Exact running cost by city, daily distance, and electricity rate.
Running cost in Mumbai
That's 86% cheaper than petrol (₹7.50/km)
Your location
Pick your city for exact rates
Petrol comparison
What would petrol cost instead?
India avg ~₹105/L
At 14 km/L
₹7.50/km
Monthly fuel cost by daily commute
Based on Mumbai rates. Swipe table on mobile.
| Daily km | Monthly km | Tata Sierra EV | Petrol | You save |
|---|---|---|---|---|
| 10 km | 300 | ₹314 | ₹2,250 | ₹1,936 |
| 30 km | 900 | ₹942 | ₹6,750 | ₹5,808 |
| 50 km | 1,500 | ₹1,570 | ₹11,250 | ₹9,680 |
| 80 km | 2,400 | ₹2,513 | ₹18,000 | ₹15,487 |
| 100 km | 3,000 | ₹3,141 | ₹22,500 | ₹19,359 |
Annual savings at 40 km/day
₹94,215/ year
That's ₹4.71 L saved in fuel alone over 5 years of owning the Tata Sierra EV, vs driving an equivalent petrol car.
How much does the Tata Sierra EV really cost to run?
At India's average residential electricity rate of ₹8/kWh, the Tata Sierra EV runs at approximately ₹0.87 per km — based on its efficiency of 9.17 km per kWh. For context, an equivalent petrol car doing 14 km/L at ₹105/L costs ₹7.50/km — nearly 8.6× more.
The per-km math
| EV efficiency | 9.17 km / kWh |
| Electricity cost | ₹8 / kWh (India avg) |
| EV running cost | ₹0.87 / km |
| Petrol mileage | 14 km / L |
| Petrol cost | ₹105 / L (India avg) |
| Petrol running cost | ₹7.50 / km |
What this means monthly
At the default Indian urban commute of 50 km/day (≈1,500 km/month):
- Tata Sierra EV electricity cost: ₹1,309/month
- Equivalent petrol cost: ₹11,250/month
- Monthly savings: ₹9,941/month
Over 5 years that's approximately ₹5.96 L saved in fuel alone — before counting maintenance and insurance savings.
Why electricity is cheaper
Burning 1 litre of petrol releases about 9.1 kWh of usable energy — but a petrol engine only converts ~20-25% of that to actual motion. The rest is heat lost through the radiator and exhaust. EVs convert ~85-90% of stored battery energy into motion. So you're paying for 4× less energy waste with an EV. That's the real reason the Tata Sierra EV crushes petrol on per-km cost — not because electricity is cheap in India (it isn't particularly), but because EVs are simply more efficient.
Caveats to the math
- DC fast charging (public networks) costs 2-3× home rates. The Tata Sierra EV would cost ₹2.18/km on DC if you charge exclusively there — still cheaper than petrol.
- Electricity slabs — once you cross 500 units/month, your tariff jumps. Most EV owners stay in the 300-500 slab shown above.
- Battery degradation — after 5-7 years, the Tata Sierra EV's usable range drops 10-15%, which raises per-km cost slightly.
- Solar — if you have rooftop solar, the Tata Sierra EV can run at ~₹0.50/km during daylight charging.
Tata Sierra EV cost per km FAQs
What is the cost per km of the Tata Sierra EV?+
The Tata Sierra EV costs approximately ₹0.87 per km at India's average electricity rate of ₹8/kWh. That's 88% cheaper than running a petrol car doing 14 km/L at ₹105/L (which costs ₹7.50/km).
How much does it cost to charge the Tata Sierra EV?+
At ₹8/kWh and 9.17 km/kWh efficiency, driving 100 km in the Tata Sierra EV consumes about 10.9 kWh and costs roughly ₹87. A full charge from empty costs approximately ₹480.
What is the monthly fuel cost of the Tata Sierra EV?+
Driving 50 km/day (1,500 km/month), the Tata Sierra EV costs approximately ₹1,309/month in electricity — vs ₹11,250/month for petrol. You save ₹9,941/month.
Does the Tata Sierra EV cost change by city?+
Yes — city electricity tariffs vary from ₹5.4/kWh (Chandigarh) to ₹10.7/kWh (Bangalore). Use the city selector above to see your exact cost. Most Tata Sierra EV owners report effective rates of ₹7-10/kWh after billing slabs and fixed charges.
Is public charging more expensive?+
DC fast charging at public networks typically costs ₹15-22/kWh (2-3× home rates), so ₹1.92–₹2.40/km. The math above assumes home charging — which is where 80%+ of EV kilometers are refueled in India.