Check your car thoroughly for basic safety
I rented a car for six weeks from Auckland CBD Omega Car Rental NZ at the time of pick up they could not find a cover for the luggage area, and I asked about the tire safety. They reassured me the tires were just fine. Within three days one was running low, so I stopped in at a national tire chain with excellent customer reviews and was told that one of my tires was absolutely unsafe to be driving on and should not have been rented out. I’m currently losing a day of travel and the company rearrange their schedule to fit me in immediately. That’s after it took almost a half hour to get approval from Omega Car Rental NZ to get the wheel alignment and replacement tire approved. While I had agreed for an older vehicle, I did not realize that meant no rearview camera, no ability to connect my phone to the speaker system, a hub cap held on by zip/cable ties, no luggage cover and squealing brakes. This is very different than my experience at the Christchurch outlet.
Follow-up: After having lost half a day of touring New Zealand’s Northlands, I received a phone call response to my email, and Omega has offered me a free upgrade to a premium hybrid, if I don’t mind detouring to the AKL airport centre.