gzt: Radio NZ reviews EV and Solar low interest loans and mortgage add-ons:

https://www.rnz.co.nz/news/top/592773/so-you-want-to-buy-an-ev-here-s-what-your-bank-could-offer

Westpac comes out on top for existing mortgage customers with $50k interest free over five years.

For new or existing customers without a mortgage Westpac offers a 7.99% EV personal loan. That is definitely way better than retail finance if you don't have a mortgage to draw from.

We got a three year 1% loan from ANZ. We did not cash in our 6% term deposits with them.

I could not be bothered changing banks.