Changes to the Motor Vehicle Register have significantly reduced the strain on the computer system used to store information.
In January, the Transport Agency began charging a fee for previously free information such as odometer history checks.
Changes were made to the register's fee structure because of the maintenance costs involved in dealing with requests, which were averaging more than 1.5 million a month.
Figures obtained by Radio New Zealand News show that in the three months after the charges came in, requests for information fell to an average of just under 1 million a month.
The Motor Trade Association says the fee changes haven't impeded legitimate traders in any way.
