47-year-old Steven Courage, of Plymouth, has denied eight offences of fraud and using a false instrument after appearing in court, charged with conning customers, reports the Plymouth Herald.
The motor dealer has been accused of lying about mechanical problems on cars and vans, and in at least one scenario, the mileage of a vehicle.
Courage also allegedly failed to transfer the proceeds of the sales to vendors.
Courage pleaded not guilty to the allegations which date back to 2013 and 2014, including seven counts of fraud by abuse of position, false representation and failure to discole information.
Further allegations include using an edited duplication invoice as a false instrument, lying to a customer about repairs to the cooland system of a Vauxhall Signum and stealing £7,000 sale proceeds from a Dodge Pickup and its trailer.
Judge Ian Lawrite has set out a trial lasting more than a week, on April 10, 2018.