Clocked and written off cars were just some of the complaints potential car buyers from Cavan and Monaghan raised with the CCPC.
The Competition and Consumer Protection Commission is warning car dealers of their legal obligations as they carried out unannounced inspections across the region last week.
Among the complaints that sparked this investigation was an Opel Insignia in Monaghan which was advertised as having 126,000km on the clock when it had been adjusted from 250,000 kilometres.
In another case, there was an 8,000 mile discrepancy between the advertised mileage of a Ford Mondeo for sale in Monaghan and its last MOT in the UK.
While in Cavan, a trader couldn't provide an engineer's report for a VW Passat which the customer's insurance company later revealed had been previously crashed.
Inspection activity into the complaints are ongoing, with the CCPC reminding car dealers of the requirement to comply with consumer protection law.
