Which luxury brand is the QX55 associated with?

The QX55 is associated with the Infiniti brand, which is Nissan's luxury vehicle division. Infiniti is known for its emphasis on performance, luxury, and advanced technology, and the QX55 embodies these characteristics with its stylish design, comfortable interior, and robust performance features. As a crossover coupe, the QX55 represents Infiniti's commitment to combining the practicality of an SUV with the sporty aesthetics of a coupe, appealing to a demographic that values luxury, style, and innovative engineering.

The other brands, while reputable in the luxury market, do not have a model named QX55 associated with them. Each has its own lineup of vehicles, but it’s Infiniti that specifically produces and markets the QX55 as part of its luxury portfolio.