* Private ownership: Chevrolet doesn't track what happens to a car after it's sold from a dealership.
* Scrapping and parts use: Many older cars are scrapped, or their parts are used in other vehicles.
* Export: A significant number of Corvettes have been exported, and tracking their status is nearly impossible.
* Accuracy of registration data: Even government registration data isn't always perfectly accurate or complete.
While various enthusiast clubs and websites try to estimate the number of surviving Corvettes, these are always approximations and involve significant guesswork. Any number you find will be a highly speculative estimate.