62-68 it was called a Chevy II. 69-79 they were called Novas and I wouldn't even count the 85-88 toyotas. So technically the Nova was produced for 11 years. If you count the Chevy II as a Nova as most do then add 7 more for a total of 18 years. If you want to count the toyotas too then add another 4 for a total of 22. I think that was a trick question :?