Выражение встречается в следующем контексте:Mercedes-Benz is the 1 certified pre-owned dealer in the New York region/
Заранее спасибо

"To qualify for Certified Pre-Owned status, each used Ford must be less than 4 years old and have less than 50000 miles on the odometer"

The point here is Certified Pre-Owned status, not just Pre-Owned status, which doesn't exist. "Certified" means the warranty was extended.

"Pre-Owned" is just a "better" name for "used" :)