If you use your private vehicle for rental property related activities (or for business activities if you are self employed), then you can keep a logbook stating the date, distance and reason for the travel. A vehicle mileage claim can then be included in your tax returns.
Mileage Rate for 2020
The vehicle mileage rate for the 2020 tax year for mileage of up to 3,500kms is 79 cents per kilometre.
The IRD’s mileage set rates can only be used where a logbook is maintained or there is other evidence to establish the rental or business use of a vehicle.
Disclaimer: The above article is general in nature and we recommend you seek professional advice tailored to your specific personal situation.