BYD BYD Dolphin cost per km
Exact running cost by city, daily distance, and electricity rate.
Running cost in Mumbai
That's 84% cheaper than petrol (₹5.83/km)
Your location
Pick your city for exact rates
Petrol comparison
What would petrol cost instead?
India avg ~₹105/L
At 18 km/L
₹5.83/km
Monthly fuel cost by daily commute
Based on Mumbai rates. Swipe table on mobile.
| Daily km | Monthly km | BYD BYD Dolphin | Petrol | You save |
|---|---|---|---|---|
| 10 km | 300 | ₹288 | ₹1,750 | ₹1,462 |
| 30 km | 900 | ₹864 | ₹5,250 | ₹4,386 |
| 50 km | 1,500 | ₹1,440 | ₹8,750 | ₹7,310 |
| 80 km | 2,400 | ₹2,304 | ₹14,000 | ₹11,696 |
| 100 km | 3,000 | ₹2,880 | ₹17,500 | ₹14,620 |
Annual savings at 40 km/day
₹71,151/ year
That's ₹3.56 L saved in fuel alone over 5 years of owning the BYD BYD Dolphin, vs driving an equivalent petrol car.
How much does the BYD BYD Dolphin really cost to run?
At India's average residential electricity rate of ₹8/kWh, the BYD BYD Dolphin runs at approximately ₹0.80 per km — based on its efficiency of 10 km per kWh. For context, an equivalent petrol car doing 18 km/L at ₹105/L costs ₹5.83/km — nearly 7.3× more.
The per-km math
| EV efficiency | 10 km / kWh |
| Electricity cost | ₹8 / kWh (India avg) |
| EV running cost | ₹0.80 / km |
| Petrol mileage | 18 km / L |
| Petrol cost | ₹105 / L (India avg) |
| Petrol running cost | ₹5.83 / km |
What this means monthly
At the default Indian urban commute of 50 km/day (≈1,500 km/month):
- BYD BYD Dolphin electricity cost: ₹1,200/month
- Equivalent petrol cost: ₹8,750/month
- Monthly savings: ₹7,550/month
Over 5 years that's approximately ₹4.53 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 BYD BYD Dolphin 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 BYD BYD Dolphin would cost ₹2.00/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 BYD BYD Dolphin's usable range drops 10-15%, which raises per-km cost slightly.
- Solar — if you have rooftop solar, the BYD BYD Dolphin can run at ~₹0.50/km during daylight charging.
BYD BYD Dolphin cost per km FAQs
What is the cost per km of the BYD BYD Dolphin?+
The BYD BYD Dolphin costs approximately ₹0.80 per km at India's average electricity rate of ₹8/kWh. That's 86% cheaper than running a petrol car doing 18 km/L at ₹105/L (which costs ₹5.83/km).
How much does it cost to charge the BYD BYD Dolphin?+
At ₹8/kWh and 10 km/kWh efficiency, driving 100 km in the BYD BYD Dolphin consumes about 10.0 kWh and costs roughly ₹80. A full charge from empty costs approximately ₹240.
What is the monthly fuel cost of the BYD BYD Dolphin?+
Driving 50 km/day (1,500 km/month), the BYD BYD Dolphin costs approximately ₹1,200/month in electricity — vs ₹8,750/month for petrol. You save ₹7,550/month.
Does the BYD BYD Dolphin 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 BYD BYD Dolphin 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 ₹1.76–₹2.20/km. The math above assumes home charging — which is where 80%+ of EV kilometers are refueled in India.