My last used car I went to literally like 20 dealerships and used car lots. I had pretty specific requirements based on research I had done with regard to price, mileage, and features. Dealer shopping was a complete waste of time. They didn't have what I wanted but wasted hours trying to talk me into buying something that they did have. Used Car lots were much better but still didn't find a match. Finally found exactly what I wanted on Craigslist a couple of months after the dealership blitz and it's worked out great. If you have time, personal sale is the way to go. I also have a theory that people who love their cars and take immaculate care of them are more likely to sell them themselves too. I have bought two cars from private sellers and they were both spotless and had complete maintenance records etc.