December, 1980.
But the "certified" used Prius seemed remarkably close to new condition when I bought it, considering its odometer reading of about 41k.
My 2013 Ram. Before that I purchased a new 2009 Sierra and before that a new 1997 Sierra and a 87 Chevy Wrangler.
In 2001, I purchased a brand new Olds Intrigue for my wife.
Getting a GM employee discount sure helps.
Last November we purchased a used but still rather new (20,000 kms on it) 2017 Chevy Impala.