Which figure of speech is used in this text?
All the cars at McCoy's Auto Dealership are certified pre-owned. Although they all seem to be in good condition, I think I'd prefer to buy a new car.

 - euphemism
 - hyperbole
The text uses a euphemism, a polite or indirect expression that is used to de-emphasize an unpleasant topic.
Pre-owned is an indirect way of saying used.