If you buy a car 3 to 5 years old, you have a good chance of getting a high-end car in good technical condition. If you decide to buy a used car that is 5 to 7 years old, your chances of getting an inexpensive "iron horse" in a good configuration are even higher. I was helped by this information https://sonomasun.com/2022/02/07/the-advantages-of-buying-a-used-car/ . As a rule, when buying a used car you will not have to pay for installation of additional equipment. Usually it is installed by the very first owner of the car. Well if it seems to you that something is lacking, it's only a reason to try to lower the price.