More than 300 people in Auckland have been ordered to re-sit their practical driving tests.
It followed allegations VTNZ officers took money in return for giving passes.
Five officers at VTNZ's Highbrook branch have been sacked and police have launched an investigation into potential fraud.
The wrongdoing's alleged to have taken place over a few years.
President of the Institute of Driver Educators Mark Revill-Johnson told Mike Hosking there can't be any faith in the results of the tests.
He says it's unknown if they were properly conducted tests according to the rules.
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