How Many Compartments Does a Sedan Belong To?

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The classification of a sedan into compartments is determined by its body layout. Single-compartment vehicle: If the vehicle's engine compartment is very small and not very noticeable, with the hood and the front windshield almost forming a sloping surface, and the body appears as a single integrated unit, then it is a single-compartment vehicle. Examples include the Citroën Picasso and the Mercedes-Benz A-Class. Many streamlined MPV models can also be classified as single-compartment vehicles. Two-compartment vehicle: A two-compartment vehicle integrates the driver's cabin and the trunk into a single compartment, with the engine placed separately. This layout increases the interior space but reduces the trunk space accordingly. Therefore, it is commonly used in small and compact cars. Three-compartment vehicle: A three-compartment vehicle has a body structure composed of three distinct, enclosed compartments, each serving a different purpose. The three compartments are the front engine compartment, the middle passenger compartment, and the rear luggage compartment.