adminVehicle Registration has about 800 000 vehicles in its database.
The development comes as the authority is also mulling extending fuel levy to ethanol as part of efforts to boost its coffers.
Zinara is now producing single-term discs lasting for four months with increased security features starting next month.
Zinara human resources and administration manager Mr Precious Murove said they were losing money to unscrupulous dealers.
Addressing journalists in Harare, Mr Murove said bogus agents target businesspeople with a fleet of vehicles like haulage trucks and buy the cheap discs.
Annual licence discs were convenient to most motorists particularly those who run fleets of vehicles.
“When we print annual licence discs, bogus agents replicate the same discs thereby prejudicing us of revenue for the whole year.
“We lost a lot of money last year through these counterfeit discs, so we have therefore stopped printing them,” he said.
Zinara is raking in about US$24 million per year in licence disc fees.
The authority has since introduced new discs for each category of vehicles with different colours to combat counterfeits.
Mr Murove said Zinara had added their own security features on the discs in addition to those that would have been used by printers.
He said 478 000 vehicles were registered last year but CVR had more than 800 000 on its database. This, he said, indicated that almost half of the vehicles in Zimbabwe were using counterfeit discs.
Zinara has given police ultra-violet lights in a bid to have these bogus discs flushed out.
Online Reporter