A salesman used genuine customers' details gathered while working at the JCT600 dealer group to obtain £145,000 in loans.
Mark Davison invented bogus transactions at the JCT600 Porsche centre in Leeds that allowed him to fund an extravagant lifestyle.
Judge Richard Lowden at Durham Crown Court this week issued a suspended 12 month jail sentence, and 120 hours of community work.
The court heard three seperate frauds occurred between 2004 and 2007.
Davison used false invoices and customers' finance details stolen from the Porsche dealership to borrow £145,000 in total, which funded a Hummer 4x4, a home for his mother and a property for himself.