In one case the mileage was reduced from 191,000 miles to 79,000 miles.
However, it appears the Republic of Ireland may become a haven for car clocking in the near future given the sentences imposed.
The National Consumer Agency (equivalent to our Trading Standards Officers) found Orange Motors Ltd had supplied four cars with reduced mileage readings.
They escaped fine or imprisonment but were required to give an undertaking to compensate customers and cease the malpractice.
Visit www.lawgistics.co.uk or call 0870 26 77 118 for more information.