Moyes Panmure, known as the place "beside the big Mt Wellington", is to close after 30 years selling new and used cars to Aucklanders.
Directors of the well-known dealership came to the decision after its major supplier, Holden, announced changes to its long-term business strategy, which included reducing the number of its franchises.
Holden, which recently ceased manufacturing cars in Australia, told parent company Moyes Motor Group that it would no longer require their franchise agreement from 2018.
Managing director John Moyes, whose father and brother founded the business 30 years ago, said it was not feasible for Moyes Panmure to continue without Holden or securing a deal with another major brand, which had not been achieved.
"Holden's a big part of us here; not just the sales but the service and parts and the whole thing. We couldn't have survived without it, really," he said.