What aspect of the QX55's design is emphasized for comfort?

The emphasis on ergonomic seats in the QX55's design highlights the manufacturer's commitment to passenger comfort. Ergonomic seating is designed to support the body properly, reducing fatigue during long drives and enhancing the overall driving experience. This aspect of the design ensures that both the driver and passengers have adequate support for their lower back and promote healthy posture, which is especially important in a luxury vehicle where comfort is a high priority.

Leather upholstery, while adding to the aesthetic and luxurious feel of the vehicle, does not solely focus on physical comfort. A heated steering wheel provides warmth during cold weather, which contributes to comfort but only addresses a specific condition. Adjustable armrests are also a comfort feature, but they do not encapsulate the overall design philosophy aimed at maintaining proper posture and support provided by ergonomic seats.