EV vs Petrol Cost NZ 2026: The Honest Comparison
New Zealand EVs have paid Road User Charges since April 2024, and the Clean Car Discount is long gone. So is an electric car still cheaper to run? We put RUC on the EV side of the ledger and petrol excise on the other, and let the per-kilometre maths answer the question.
How the playing field works since April 2024
Light battery EVs pay Road User Charges of $76 per 1,000 km (about 7.6c/km), purchased in 1,000km blocks with an admin fee of roughly $12.44 per online purchase. Plug-in hybrids pay $38 per 1,000 km on top of their petrol.
Petrol cars do not buy RUC; they pay fuel excise at the pump as part of the petrol price. Both vehicle types now contribute to roads, so comparing an EV's electricity-plus-RUC cost against a petrol car's pump price is a fair like-for-like comparison. Every figure below includes RUC on the EV side.
Running Cost per 100km: EV vs Petrol
Typical EV at 16kWh/100km charged at home (35c/kWh NZ average). Petrol car at 8.3L/100km with petrol estimated at $2.60/L (editorial estimate; pump prices vary).
| Cost component | EV (per 100km) | Petrol (per 100km) |
|---|---|---|
| Energy (home charging / pump) | $5.60 | $21.58 (excise included at the pump) |
| Road User Charges | $7.60 | Not applicable (paid via fuel excise) |
| Total per 100km | $13.20 | $21.58 |
| Per year (15,000km) | $1,980 | $3,237 |
| Over 5 years | $9,900 | $16,185 |
Even with RUC included, the EV works out about 39% cheaper per kilometre at average home-charging rates: roughly $1,257 a year at 15,000km, or $6,285 over five years, on energy and road charges alone. Overnight EV power plans and rooftop solar reduce the electricity component further (RUC stays the same however you charge). This table deliberately excludes servicing, insurance and depreciation; servicing generally favours the EV, while insurance and resale vary by model, so compare those for your shortlisted cars.
Home Charging Cost by Region (RUC included)
| Region | Avg power price | EV /100km (incl RUC) | Petrol /100km | EV saving |
|---|---|---|---|---|
| Auckland | 35c/kWh | $13.20 | $21.58 | 39% cheaper |
| Northland | 36c/kWh | $13.36 | $21.58 | 38% cheaper |
| Waikato | 35c/kWh | $13.20 | $21.58 | 39% cheaper |
| Bay of Plenty | 35c/kWh | $13.20 | $21.58 | 39% cheaper |
| Gisborne | 37c/kWh | $13.52 | $21.58 | 37% cheaper |
| Hawke's Bay | 36c/kWh | $13.36 | $21.58 | 38% cheaper |
| Taranaki | 36c/kWh | $13.36 | $21.58 | 38% cheaper |
| Manawatu-Whanganui | 36c/kWh | $13.36 | $21.58 | 38% cheaper |
| Wellington | 35c/kWh | $13.20 | $21.58 | 39% cheaper |
| Nelson & Tasman | 36c/kWh | $13.36 | $21.58 | 38% cheaper |
| Marlborough | 36c/kWh | $13.36 | $21.58 | 38% cheaper |
| West Coast | 38c/kWh | $13.68 | $21.58 | 37% cheaper |
| Canterbury | 34c/kWh | $13.04 | $21.58 | 40% cheaper |
| Otago | 35c/kWh | $13.20 | $21.58 | 39% cheaper |
| Southland | 33c/kWh | $12.88 | $21.58 | 40% cheaper |
EV efficiency: 16kWh/100km. RUC: $7.60/100km for light battery EVs. Petrol: 8.3L/100km at an estimated $2.60/L; pump prices vary by week and region. Power prices are regional residential averages (33-38c/kWh band).
What about plug-in hybrids?
PHEVs pay a reduced RUC rate of $38 per 1,000 km ($3.80/100km) on top of their petrol, reflecting that they part-run on fuel that already carries excise. A PHEV driven mostly on electricity sits between the EV and petrol columns above; one driven mostly on petrol lands close to the petrol column while still paying RUC.
Cheapest EVs in New Zealand (2026)
BYD Dolphin
427km range | 60.4kWh
MG4
450km range | 64kWh
GWM Ora
420km range | 63kWh
BYD Atto 3
420km range | 60.5kWh
BYD Sealion 6
482km range | 71.8kWh
BYD Seal
570km range | 82.5kWh
Indicative NZ pricing, June 2026. Verify current pricing with the dealer.
Calculate Your Savings
Use our calculator to compare running costs for your specific situation. Select your vehicle, daily driving distance, and solar setup. The calculator includes Road User Charges automatically.
For someone driving 15,000km a year, petrol at an estimated $2.60/L and 8.3L/100km comes to about $3,237 a year. An EV covering the same distance on home charging costs about $1,980 a year including RUC, and less again on an overnight EV plan.
With rooftop solar, the electricity share of your charging drops toward zero while RUC stays fixed at $7.60 per 100km, so solar households see the lowest total running costs of all.
EV Charging Cost Calculator
Compare EV charging costs vs petrol for your driving habits
EV vs Petrol FAQ
Is an EV cheaper to run than a petrol car in New Zealand?
Usually yes, even after Road User Charges. Home charging a typical EV (16kWh/100km) at the NZ average power price of about 35c/kWh costs around $5.60 per 100km in electricity, plus $7.60 per 100km in RUC, for a total of about $13.20 per 100km. A petrol car using 8.3L/100km at an estimated $2.60/L costs about $21.58 per 100km. That makes the EV roughly 39% cheaper per kilometre at home-charging rates. Overnight EV power plans and rooftop solar widen the gap further.
What are Road User Charges and do EVs really pay them?
Yes. Since 1 April 2024, light battery EVs in New Zealand pay Road User Charges of $76 per 1,000 km (about 7.6c/km), bought in 1,000km blocks with an admin fee of about $12.44 per online purchase. Plug-in hybrids pay $38 per 1,000 km. Petrol cars do not buy RUC; they pay fuel excise at the pump instead. Any honest EV-vs-petrol comparison includes RUC on the EV side, which is exactly what the maths on this page does.
How much does it cost to charge an EV at home vs filling up with petrol?
A typical EV uses about 15-18kWh per 100km. At the NZ residential average of around 35c/kWh, that is roughly $5-$6 of electricity per 100km, or about $13 per 100km once RUC is included. Filling a petrol car costs about $22 per 100km at an estimated $2.60/L (check current pump prices). Charging on an overnight EV plan, or from rooftop solar, lowers the electricity component further; public DC fast charging costs several times more per kWh than home charging, so the savings case rests on charging at home.
What about EV servicing costs?
EVs have far fewer moving parts (no engine oil, spark plugs, exhaust, or conventional transmission) and regenerative braking means brake pads last much longer. The main service items are tyres, cabin filter, brake fluid and coolant checks, so scheduled servicing is generally simpler and cheaper than for a petrol car. Exact pricing varies by model and dealer, so compare service plans for the specific cars you are weighing up.
Are there any EV rebates in New Zealand?
No. The Clean Car Discount ended on 31 December 2023, and there is no purchase rebate for EVs and no subsidy for home chargers. There is also no FBT exemption or salary-sacrifice scheme for EVs in NZ. What does help: bank green home loan top-ups (around 1% p.a. fixed for 3 years at ANZ, ASB and BNZ, or 0% at Westpac up to set limits) can finance a charger or an EV-and-solar package, and overnight EV power plans cut home charging costs. The per-km running cost advantage shown on this page exists without any subsidy.
Ready to Go Electric? Start with a Home Charger
Home charging is where EVs deliver their cost advantage; public fast charging costs several times more per kWh. PumpSwap connects you with local electricians for free, obligation-free quotes.
Get Free Charger Install QuotesMethodology & Sources
- Road User Charges: NZTA. Light battery EVs $76 per 1,000 km plus ~$12.44 admin fee per online purchase; PHEVs $38 per 1,000 km. In force since 1 April 2024.
- Electricity: NZ residential average of about 35c/kWh, with a 33-38c/kWh regional band (2026). Overnight EV plans are available from several retailers; rates vary, so compare plans.
- Petrol price: $2.60/L is an editorial estimate for June 2026, used only to illustrate the comparison. Pump prices change weekly; check current local prices.
- Consumption assumptions: EV 16kWh/100km; petrol 8.3L/100km (medium SUV averages).
- This page compares energy and road-charge costs only. Servicing, insurance, depreciation and purchase price differ by model and are not included in the tables.