Chandler and O'Neil took £334,000 ($644,000) from a total of seven victims between December 2014 and December 2016, fabricating documents so the customers would believe their cars had been ordered.
When one of the victims became suspicious about the length of time it was taking and the lack of action from Chandler and O'Neil they went to the police.
After this, the other victims came forward.
The court heard that Chandler used around £91,000 (NZ$176,000) of the cash to prop up his failing business while O'Neil frittered the rest away on day-to-day living, including regular trips to the pub.
O'Neil, was convicted of one count of transferring criminal property, six counts of fraud by false misrepresentation and one count of theft and has been banned from being a company director for seven years.
Chandler was found guilty of one charge of transferring criminal property and two counts of fraud by false misrepresentation and has been banned from being a director for five years.
A compensation order to retrieve some of the victims' lost funds has been applied for.