Sedan fitment matters because a part or accessory must work with the exact car without obstructing controls, interfering with safety systems, or exceeding an approved limit. A floor mat, replacement wheel, seat accessory, or cargo carrier can appear to fit while creating a problem in movement, attachment, clearance, or electrical compatibility.
Use the actual model year, trim, powertrain, and fitted equipment to check compatibility. Then follow both the vehicle and product instructions for installation and use. A product advertised for sedans, or for a similar-looking model, is only a starting point; the complete installed arrangement has to be supported.