Both have advantages and disadvantages. If you are interested in a used car look for a model that you like, for make year and number of kilometers. Diesel cars are difficult to find. The size of the cars is usually larger then those in Europe. There are a variety of models with 6 cylinders or even more.
American cars are the most inexpensive ones compared with Japanese and German etc.
The value of the car depends on multiple factors. Keep in mind that in the winter, roads are full of salt and the car will rust faster. Also winter might have -30 C temperatures as well as it tend to be windy. It might be harder to start your car. This package shows if the car still has a loans against it or if it is fully paid.