The answer to this question depends on the size of the office chair and the size of the sedan. Most office chairs are designed to be used in standard-sized offices, which means they will likely be too large to fit in a sedan. However, there are some office chairs that are specifically designed for smaller spaces. These chairs typically have narrower seats and shorter legs, which makes them more compact and easier to fit into a smaller space. So if you're looking for an office chair that will fit in your sedan, be sure to shop for one that is specifically designed for smaller spaces.