He believed the owners were trying to photograph the car but was shocked they would take an expensive car onto the beach.
An Auckland Council spokeswoman said driving on Kohimarama Beach was prohibited under the Public Safety and Nuisance Bylaw 2013.
Under the bylaw, a person was not allowed to drive, ride, propel, wheel or park any vehicle on a beach, except in the case of an emergency, or with the prior written approval of the council.
The restriction did not apply to anyone driving a vehicle by a direct route at a speed limit of 10 km/h on a beach where access was permitted, to launch or recover a boat in the water.
However, every vehicle had to be removed from the beach immediately after launching or recovering the boat.