Lemon law or VW buyback cars get a "branded title" which presents as a salvage title in some states. Factory warranty will still be honored at the dealer. Just have the seller run the Carfax and have them tell you why it was bought back. It could be infotainment issues, Air conditioning, or a squeaky door. Depending on what it is you can save a few thousand without issue, but if it is something like a water leak I would likely pass and spend a few thousand more to not have a car that will always have a diminished resale value.