What is the box on top of a car called?

2 Answers
MaryLee
09/04/25 2:17am
The box on top of a car has many names, commonly referred to as: roof box, roof luggage box, car luggage box, etc. The primary purpose of the box on top of a car is to expand storage space, used for carrying more self-driving equipment, luggage, etc., mainly made of improved engineering composite materials. The roof luggage box not only expands storage space but also changes the appearance of the car, making it both stylish and practical. The original car does not come with a roof box; owners need to install it later, which requires registration with the vehicle management office. Installation is only permitted after approval from the vehicle management office, and not all luggage boxes can be installed—there are specific requirements.
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Claire
09/16/25 3:32am
I often go on road trips, and that box on the car is called a roof box. That's what my friends and I call it when we chat. It's mainly used to carry extra luggage, like tents or ski gear. During long trips, when the trunk isn't enough, adding a roof box significantly increases space. I use the hard-shell type, which is quite durable. Installation is pretty simple—just fix it onto the crossbars yourself, but make sure to tighten the screws to prevent wobbling at high speeds. The downside is that it increases wind resistance and fuel consumption a bit, but overall, it's super practical, especially for hassle-free family trips. When choosing the size, make sure it matches the roof load capacity to avoid overloading, which could cause issues. I usually go for brands like Thule—good quality, and mine has been trouble-free for five years.
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