Ownership cost
What will this EV cost to own?
Total cost over 3, 5 or 8 years in Tamil Nadu, next to an equivalent petrol automatic. Chennai ex-showroom prices. Resale value is not included.
Every number is tagged: Your input Sourced Estimate
Tata Sierra.ev
Sierra.ev 75 Empowered A
1.5 petrol, 7-speed DCA. Picked as the closest in price; change it if you prefer.
EV · 5 yrs
₹25,79,348
₹42.99/km · ₹42,989/mo
Petrol · 5 yrs
₹22,20,327
₹37.01/km · ₹37,005/mo
Break-even (counted month by month, up to 15 years)
The EV becomes cheaper after 9 years 5 months (about 1,13,000 km).
Over 5 years the EV is dearer by ₹3,59,022.
| Over 5 yrs | EV | Petrol |
|---|---|---|
| Ex-showroom price | ₹24,79,000 | ₹14,49,000 |
| Road tax (TN) | ₹0 | ₹2,60,820 |
| Registration & FASTag | ₹400 | ₹400 |
| Charging / fuel | ₹99,948 | ₹5,10,107 |
| Maintenance | ₹0 | ₹0 |
| Insurance | ₹0 | ₹0 |
| Total | ₹25,79,348 | ₹22,20,327 |
How these figures are worked out
- Sourced EV ex-showroom ₹24,79,000 (Chennai, checked 2026-10-27). Road tax ₹0: Tamil Nadu exempts EVs until 2027-12-31. Registration ₹0 for EVs; FASTag ₹400.
- Sourced Est. on-road, Chennai (excl. insurance): ₹25,04,190, including ₹24,790 TCS. TCS is adjustable against income tax, so it is not counted as a cost here.
- Your input Insurance is not estimated for this EV: its third-party slab is not confirmed. Enter yearly quotes below for both cars.
- SourcedEnergy use 6.93 km/kWh: Tata's estimate: 520 km real-world range ÷ 75 kWh. Cost ₹1.67/km at the meter, charging losses included.
- Sourced Tata Sierra Pure DCA: Chennai ex-showroom ₹14,49,000, checked 2026-10-30. TN road tax ₹2,60,820 on the ex-showroom price (approximation). FASTag ₹400; the petrol car's registration fee is not included.
- Sourced ARAI claimed 16.9 kmpl; costed at the real-world share you set Estimate, giving ₹8.50/km.
Insurance and maintenance are left at ₹0 until you enter your own quotes; we do not guess them.
Assumptions
- Sourced EV road tax: ₹0. 100% motor vehicle tax exemption for battery-operated vehicles, 1 Jan 2026 to 31 Dec 2027. If you register after 2027-12-31, this may change.
- Sourced Petrol road tax: 12% up to ₹5,00,000, 13% up to ₹10,00,000, 18% up to ₹20,00,000, 20% above. Lifetime tax on a new private car, as a share of the vehicle's cost, from 9 Nov 2023. Applied here to the ex-showroom price, which is an approximation of the taxable cost.
- Sourced Public DC: ₹20/kWh (checked 2026-10-30). Median listed DC price across 98 Chennai stations (ChargeDekho, 18 Sep 2026); some networks add GST on top. Wattway (Aug 2026) puts Tamil Nadu public DC at ₹18–26/kWh.
- ChargeDekho: EV charging prices in Chennai (2026-09-18)
- Wattway: Zeon charging network guide (2026-08)
- Sourced Petrol: ₹107.76/L in Chennai on 2026-10-30.
- BusinessLine: petrol price today in Chennai (2026-10-30)
- Times of India: petrol price in Chennai (2026-10-30)
- Your input Home: ₹8/kWh Owner's choice for a TN home connection. Change it to match your bill.
- Estimate Charging losses 11% Estimate. Energy lost between the meter and the battery, typically 10–12% for AC home charging.
- Estimate Real-world share 75% Estimate. Lab figures (MIDC range, ARAI mileage) are higher than everyday driving. Tata's own real-world range estimates sit at 74–80% of MIDC; Autocar India's tests of the Grand Vitara AT (13.45 of 20.58 kmpl) and Creta IVT (13.11 of 17.7 kmpl) land at 65–74% of ARAI. Used for the petrol car, and for EVs whose maker publishes no real-world estimate.
- Not included: resale value, registration and handling fees, FASTag, accessories, tyres, a home charger, fuel or tariff price changes, and inflation. Costs are counted on an ownership basis: the full price is a cost on the day you buy, and a loan adds its interest.
- Petrol pairs are listed only where two independent sources agreed on both the Chennai price and the claimed mileage. Data version 2026-10-30.2.
Want specs side by side instead? Compare these trims.