Compare the same annual distance
Both vehicles use the entered kilometres so energy, fuel and distance-based RUC remain comparable. Use your expected driving rather than a national average.
New Zealand · Vehicle ownership
EV vs petrol cost calculator NZ
Compare EV charging, petrol, RUC and selected annual ownership costs over the same distance and ownership period.
Last reviewed: 22 August 2026
EV cost difference
−$950
EV additional cost after purchase premium over 5 years
EV annual cost
$2,750.00
Petrol annual cost
$4,560.00
- EV energy per year
- $810.00
- EV RUC per year
- $1,140.00
- Petrol fuel per year
- $3,360.00
- Annual operating saving
- $1,810.00
- EV premium break-even
- 5.5 years
- EV total incl. premium
- $23,750
- Petrol total
- $22,800
Estimate only: Energy prices, RUC, servicing, insurance, purchase prices and resale values change. Compare equivalent vehicles and confirm current rates.
Home and public EV charging
Use a weighted cents-per-kWh rate if charging happens in several places. Frequent public rapid charging can materially increase the EV energy cost.
Petrol consumption and price
Use a realistic L/100 km figure for your routes and the pump price you expect to pay. Traffic, hills, speed and load affect real consumption.
Purchase premium and break-even
The extra EV purchase price is compared with annual operating savings. Break-even is shown only when the EV operating scenario is cheaper.
EV versus petrol costs in New Zealand
A useful comparison includes more than electricity versus petrol. Enter applicable road user charges and comparable annual servicing, insurance and tyre assumptions. Standard petrol vehicles generally pay fuel excise through petrol rather than distance RUC, while vehicle classifications and rates must be confirmed with NZTA.
The model excludes finance, uncertain resale value, charger installation, parking and unexpected repairs unless you incorporate them into your assumptions. Test a base case and a cautious case because small changes in annual distance, public-charging share or petrol price can alter the result.
New Zealand transport sources
Frequently asked questions
Does the comparison include EV road user charges?
Yes. Enter the RUC rate that applies to each vehicle. Rates and classifications can change, so confirm them with NZTA rather than relying on a permanent default.
How should I enter EV charging cost?
Use a weighted electricity rate reflecting home and public charging. If most charging happens at home, start with the relevant marginal cents-per-kWh rate from your electricity plan.
What does EV purchase premium mean?
It is the extra upfront amount paid for the EV compared with the petrol vehicle. Enter zero if their purchase prices are the same or you want an operating-cost-only comparison.
Does this predict resale value?
No. Resale values are uncertain and excluded. You can reflect an expected ownership difference in the purchase premium, but treat it as a scenario rather than a forecast.
Are insurance, servicing and tyres included?
Enter annual selected ownership costs for each vehicle. Include only comparable items and remember that unexpected repairs, finance, parking and depreciation may remain separate.