When you get a hybrid car, you will start thinking about your battery and what will you do if it needs replacement.
If you buy a new car this should not be such a big issue, because the batteries usually have a good warranty that covers any failure. In case something bad happens, you can go back to the dealer you bought the car from and take it into service, if they have one, or to a service they recommend and have a contract with.
If you bought a used car from a dealer, the case is similar. They usually work with car services and can tell you where to go to solve the issue, and you might even get a discount, if they have a good contract.
On the other hand, if you buy it from the former owner directly, chances are that the car is not as good as it sounds to begin with. Also, you will probably not get any warranty, unless they have some left from when they bought the car to begin with.
Still, make sure that the service you go to to have your car’s hybrid battery replaced is a good one and that the people there have experience with your type of vehicle.