The site, which provides discounts on used and nearly new cars, has been developed to be easier to use.
Chris Green, managing director of Used-Car-Discount.com, said: “Many of our customers at New-Car-Discount.com have vehicles that they want to part exchange for their new car. Used-Car-Discount.com provides us with the ideal platform to market these cars.
"We can often advertise and sell the cars before they have even been delivered to us and because they are not taking up costly forecourt space, we can pass savings on to our customers.”
Through the site, customers can also search for finance and insurance.