Q: Which car to buy out of two

You would have to weigh the pros and cons of each vehicle for possible problems and the costs to those problems. Search each vehicle on the internet to see what problems others have had with their vehicles. The Prius large lithium battery for instance would be a major repair cost since they were only covered under a 8 year 80k mile warranty. The Century has low mileage and may of been taken better care of and not driven hard. Look at all of the differences like ride, comfort, and fuel mileage.

It really comes down to preference and value for the money. Once you decide on what suits you best, a certified mechanic can assist you with a pre-purchase inspection to assess the overall condition of the car before you decide to make the buy.