Autounion Auckland Airport Review: The staff were all great and moved as quickly as they could. When I missed the cut off for the pick up shuttle I went directly to Autounion the next morning as soon as they opened. It was busy with people picking up and dropping off but the process of getting the car was smooth. There was an issue with the check engine light coming on but it's a known issue so they told me not to worry about it. Overall it was a smooth process and I would rent with them again.