Petrol vs Diesel vs Electric Car: Running Cost Comparison India 2026

Diesel is cheaper per km but the car costs more. EVs are cheapest to run but have range anxiety. Here is the full TCO comparison.

1.Running cost per km comparison

Compact SUV segment (Nexon/XUV300 class): **Petrol** (14 km/l at ₹105/l): ₹7.50/km. **Diesel** (20 km/l at ₹93/l): ₹4.65/km. **Electric** (7 km/kWh at ₹8/kWh home charging): ₹1.14/km. EV running cost is **85% cheaper** than petrol and **75% cheaper** than diesel. On 1,000 km/month: petrol ₹7,500 vs diesel ₹4,650 vs EV ₹1,140.

2.Total cost of ownership (TCO) over 5 years

Nexon petrol (₹10 lakh): purchase + 5-year fuel (60,000 km) + maintenance + insurance ≈ **₹16.8 lakh**. Nexon diesel (₹12 lakh): purchase + fuel + maintenance + insurance ≈ **₹16.2 lakh**. Nexon EV (₹14.5 lakh after subsidy): purchase + charging + maintenance + insurance ≈ **₹16.4 lakh**. All three converge around ₹16-17 lakh over 5 years. Diesel wins slightly, EV is very close despite higher purchase price.

3.When each option wins

**Choose petrol if**: you drive < 10,000 km/year (low savings from diesel/EV don't justify premium). **Choose diesel if**: you drive > 15,000 km/year and do highway trips (better mileage + torque). **Choose EV if**: you drive < 300 km/day, have home charging, and value zero tailpipe emissions. Also: EVs have fewer moving parts = lower maintenance (no oil changes, brake pads last 2x longer due to regenerative braking).

4.Key takeaway

Running cost: EV >> diesel > petrol. But TCO over 5 years is surprisingly close for all three. The decision should factor in your annual driving distance, charging infrastructure access, and highway driving needs. Use our fuel cost calculator to compare your specific monthly running costs for each fuel type based on your driving pattern.