If you're comparing **energy efficiency** (how far an EV travels per unit of electricity), the best metric is **km/kWh** (higher is better) or **Wh/km** (lower is better). Here's a comparison of popular EVs available in India in 2026, using published real-world tests where available and manufacturer data otherwise: | EV | Battery | Real-world efficiency* | Typical real-world range | |---|---:|---:|---:| | MG Comet EV | 17.3 kWh | **~8–9 km/kWh** | 150–180 km | | Tata Tiago EV | 24 kWh | **~7.8 km/kWh** | ~185–190 km | | Tata Punch EV | 35 kWh | ~7–8 km/kWh | 260–300 km | | Mahindra BE 6 | 59–79 kWh | ~6.5–7.5 km/kWh | 400–550 km | | Hyundai Creta Electric | ~42–51 kWh | ~6.5–7.5 km/kWh | 320–420 km | | BYD Atto 3 | 60.5 kWh | ~6–7 km/kWh | 380–450 km | | Tata Sierra EV | 63–75 kWh | Expected ~6–7 km/kWh | 500–600 km+ (claimed) | \*Real-world efficiency varies with speed, temperature, terrain, tyre pressure, and air-conditioning use. ### Most efficient by category - **City commuting:** MG Comet EV (highest efficiency due to low weight) - **Best value:** Tata Tiago EV - **Compact SUV:** Tata Punch EV - **Long-distance EV:** Mahindra BE 6 ### Electricity cost comparison Assuming home charging at **₹8/kWh**: | Efficiency | Cost per km | |---:|---:| | 9 km/kWh | ₹0.89/km | | 8 km/kWh | ₹1.00/km | | 7 km/kWh | ₹1.14/km | | 6 km/kWh | ₹1.33/km | Even less efficient EVs are typically much cheaper to run than comparable petrol cars. If your goal is to **buy an EV**, I can also compare: - efficiency **vs price**, - **5-year ownership cost**, - or rank the **top 10 most efficient EVs sold in India in 2026**.
Sources cited · 4
- Top Selling Electric Cars in India – Best EV Models of 2026mgmotor.co.in/blogs/top-selling-ev-cars-in-india
- Every mass market EV real world range testedautocarindia.com/auto-features/real-world-ev-range-tested-of-top-ev-cars-in-india-434105
- Electric Cars in India | EV Car Prices 2026, Mileage, Imagescardekho.com/electric-cars
- Tata Sierra EV: Variant-wise features with price explainedtimesofindia.indiatimes.com/auto/cars/tata-sierra-ev-variant-wise-features-with-price-explained/articleshow/132130545.cms