Cost per 100 km by electric car, charged at home
Charged at home on a night rate, 100 km costs about €2.29 in a Tesla Model 3, the most efficient car here, and about €3.09 in a Volkswagen ID.4. A petrol car using 6 litres per 100 km costs about €11.89, a diesel using 5 litres about €10.74.
Nine cars on three kinds of rate, against petrol and diesel.
Free, no obligation. One registered electrician prices a charger, not five.
- €2.29Tesla Model 3, night rate
- €3.09Volkswagen ID.4, night rate
- €11.89petrol car
- €10.74diesel car
Per 100 km
| Car | Energy a km | Standard rate | Night rate | EV window |
|---|---|---|---|---|
| Tesla Model Y | 160 Wh | €6.05 | €2.71 | €1.56 |
| Tesla Model 3 | 135 Wh | €5.11 | €2.29 | €1.31 |
| Volkswagen ID.4 | 182 Wh | €6.88 | €3.09 | €1.77 |
| Toyota bZ4X | 176 Wh | €6.66 | €2.99 | €1.71 |
| Skoda Elroq | 170 Wh | €6.43 | €2.88 | €1.65 |
| Kia EV3 | 171 Wh | €6.47 | €2.90 | €1.66 |
| Hyundai Kona Electric | 170 Wh | €6.43 | €2.88 | €1.65 |
| Renault 5 | 158 Wh | €5.98 | €2.68 | €1.54 |
| Nissan Leaf | 167 Wh | €6.32 | €2.83 | €1.62 |
| Petrol car, 6 l | €11.89 | €11.89 | €11.89 | |
| Diesel car, 5 l | €10.74 | €10.74 | €10.74 |
What will charging cost you?
Four quick taps. You see your yearly cost at home, the cost per 100 km and the saving against petrol and diesel. Your number is only asked for at the end, if you want a price.
A Tesla Model Y doing 15,000 km a year on a night rate: about €407 a year at home, against about €1,783 for a petrol car.
How this is worked out
The energy is your car's real-world use per km, plus a tenth for what's lost while charging. The unit rates include VAT: a standard 24-hour rate of 34.38c a kWh, a night rate of 15.42c, and an EV tariff's cheap window at 8.84c. Standing charges are left out. Petrol and diesel are at pump prices of about €1.98 and €2.15 a litre. It's a guide to plan with; your own bill has your rates.
Why cars differ
A heavier or boxier car uses more energy per km. Across these nine the least efficient uses about a third more than the most efficient, which matters less than the tariff: moving from a standard rate to an EV window cuts the cost by about three quarters.
Home Car Chargers guides & price breakdowns
Straight answers to what people ask most: itemised costs, specifications, planning or grants, and what to check before you book.
More guides & resources: All guides & calculator hub · Technical & trade glossary · Frequently asked questions · Charging times by car · 3-pin plug or charger · Installers by county · Claiming the grant · No driveway?
Questions people ask
What does 100 km cost in an electric car?
Charged at home on a night rate, 100 km costs about €2.29 in a Tesla Model 3, the most efficient car here, and about €3.09 in a Volkswagen ID.4. A petrol car using 6 litres per 100 km costs about €11.89, a diesel using 5 litres about €10.74.
Which electric car costs least to run?
Of the nine here, the Tesla Model 3: it uses the least energy per km.
Home Car Chargers across all 26 counties
Requests from all 26 counties go to one vetted local specialist who covers your county — from Dublin, Cork, Galway and Limerick to Kildare, Meath, Wicklow, Waterford and Donegal. Pick your county below for local prices, specifications and advice.
What will yours cost?
Four taps to your yearly cost at home and the saving on petrol. Then, if you want, one registered electrician who fits home chargers in your county rings with a price for a charger.