Car classes categorize vehicles based on their size, design, and purpose. Common classes include sedans, SUVs, hatchbacks, and trucks. Each class serves different needs; for example, sedans are typically compact and fuel-efficient, while SUVs offer more space and off-road capabilities. Additionally, car classes can be divided into subcategories, such as luxury and economy vehicles. Luxury cars provide high-end features and comfort, while economy cars focus on affordability and fuel efficiency. Understanding these classes helps consumers choose the right vehicle for their lifestyle and budget.