Tesla used to offer a Tow Hitch option on the order page for European Model 3s, but that no longer shows up as an option. It appears that the tow hitch option is an off-menu item currently, and one has to contact Tesla to purchase the option after ordering (based on this thread
Tow bar no longer available for new Model 3 orders?). I do not believe Tesla ever offered the option of a tow hitch in New Zealand or Australia.
In the US, we just buy an aftermarket hitch for our Model 3s. There are 3 different manufacturers that I know of that make them:
Torklift,
Stealth Hitches, and
Curt. Looks like for New Zealand you should look in this thread for guidance
The Stealth Hitch is now complied in Australia thanks to TOCA! or here for ordering the hitch directly and doing it yourself
Tesla Tow Bars ANZ EV Stealth Solutions
P.S. I will leave the following descriptions I wrote about North American options for tow hitches only because I wrote them all out before I found a thread specific to New Zealand and Australia. Feel free to skip it.
I have the
Torklift Ecohitch and it is available with either 2" or 1.25" receiver tube. I chose the 1.25" receiver because I wanted it to be as high off the ground as possible and it allows a little more ground clearance at the rear (don't have to worry about driving up steep inclines). I believe most bike carriers are made for 2", so you might want to go with that instead so you don't have to add a 2" to 1.25" adapter. As a bonus on the 2" version only, it now looks like Torklift makes it out of 304 stainless steel (the 1.25" and previous 2" version were made of regular powder-coated steel). The
Torklift Ecohitch receiver tube is removeable by unscrewing one bolt with a wrench.
Our Tesla Model 3 trailer hitch by EcoHitch® fits the 2017-2022 model. This trailer hitch features our stainless steel trailer hitch receiver - click here to see how this is the only stainless steel trailer hitch receiver in the world. This Tesla Model 3 trailer hitch features our Stealth Design...
torkliftcentral.com
The
Stealth Hitches setup is a bit easier to remove the receiver when not in use because it uses a twist knob (with a key) to unlock it. It only comes with a 2" receiver, but you can buy a 1.25" receiver attachment for extra money.
Don't settle for an ordinary hitch. Preserve the look of your Tesla Model 3 with a Stealth hitch. Our hitches are fully hidden when not in use and customized to match your vehicle's design. No visible cutting. Maintain ground clearance. Made in the USA with a Limited Lifetime Warranty.
stealthhitches.com
The
Curt hitch is the least expensive option and also comes in a 2" or 1.25" version, but is fixed and you cannot remove the receiver block when not in use. Also, it is the least likely to fit without having to make it's bolt holes bigger, based on a few experiences I've read.
or