A hatchback car is a vehicle that has a large door in the back that swings upward, While many other models also use this type of door, a hatchback car is traditionally looked at as a small coupe- to sedan-size car with a raise-open door in the back instead of a trunk, which usually gives it more storage space. While Sedan is a car with a closed body (i.e. a fixed metal roof) with the engine, passengers, and cargo in separate compartments.