Use a luxury sedan instead of a conventional two-door coupe when rear-passenger access, long-trip comfort, and the actual cabin amenities are central to the journey. A suitable four-door sedan can combine easy boarding with supportive seating and useful rear accommodations, particularly when the owner regularly carries adults or travels as a passenger.
Luxury does not guarantee those advantages, and coupes can also be refined and comfortable. Compare the actual seats, suspension, tires, cabin noise, luggage space, and fitted options. Some cars marketed as four-door coupes already offer direct rear access, so the physical layout matters more than the label.