Why the middle seat in the back row of cars is often convex

In most cars today, the middle seat in the back row is usually small, the cushion is higher than the two seats on either side, and this seat is also not equipped with a headrest like the other two seats. When sitting in this position, passengers often feel uncomfortable because the back is upright and not hugging. This is mainly due to space limitations.

In the past, long, flat bench seats with cushions connected together into a single block were very popular. Over time, changing safety standards and shifting customer tastes have made bench seats less popular. The rear seats are often reserved for important people in organizations and families who need the most comfort and the most amenities.

Therefore, car manufacturers gradually prioritize designing seats in separate forms, to increase convenience and comfort for passengers, such as integrating cup holders, charging ports, control panels... The middle seat, which is rarely used, is narrowed in area to increase comfort for the most used seats.

Except for large cars, most mid-size cars and below have a width that is only comfortable enough to accommodate two seats. But to accommodate more people, the middle section is still designed to accommodate seating, although it is not as comfortable and secure as the two seats on the side.

With a small area, if the middle seat also has a concave back and face like the two seats next to it, the body will be constrained when sitting, because it is not fully embraced, so it is easy to get tired. Moreover, the back of the middle seat is often integrated with a lower armrest, so this part is also made thick, with a sturdy frame.