The Ultimate Guide to Choosing the Right Roof Box for Your Vehicle

A roof box, also known as a cargo box, is an essential accessory for any vehicle owner looking to maximize storage space for road trips, vacations, or everyday use. This handy addition to your car can significantly enhance your vehicle’s capacity, providing a secure and weatherproof solution for transporting extra luggage, sporting equipment, and other bulky items. Here, we delve into the key¬†roof box considerations when choosing a roof box, including size, material, design, and installation.

Size Matters

When selecting a roof box, size is one of the most crucial factors to consider. Roof boxes come in various dimensions, and the right size depends on your specific needs and vehicle type.

  1. Volume Capacity: Measured in liters, the volume capacity of roof boxes typically ranges from 300 to 600 liters. Smaller boxes (300-400 liters) are suitable for compact cars and smaller loads, such as weekend bags or a few pieces of sports equipment. Medium-sized boxes (400-500 liters) cater to larger loads, making them ideal for family vacations or longer trips. Large boxes (500-600 liters) are perfect for SUVs and larger vehicles, accommodating extensive luggage, camping gear, or even skis.
  2. Physical Dimensions: The length, width, and height of the box must be compatible with your vehicle’s roof size. Ensure the box fits without overhanging too much, which could affect vehicle balance and aerodynamics.

Material and Durability

Roof boxes are made from various materials, each offering different levels of durability and protection.

  1. ABS Plastic: Most modern roof boxes are made from Acrylonitrile Butadiene Styrene (ABS) plastic, known for its high impact resistance and durability. This material is also lightweight, making it easier to install and handle.
  2. Polycarbonate: Some high-end models use polycarbonate, which is stronger and more resistant to harsh weather conditions. Although pricier, polycarbonate boxes offer superior protection for your belongings.
  3. Composite Materials: Advanced composite materials are also used in some premium roof boxes, providing an excellent balance between weight, strength, and durability.

Design and Aerodynamics

The design of the roof box plays a significant role in its functionality and impact on your vehicle’s performance.

  1. Shape: Aerodynamic shapes are designed to reduce wind resistance, improving fuel efficiency and minimizing noise during travel. Sleeker designs are preferable for long-distance driving, as they help maintain the vehicle’s stability.
  2. Access and Security: Consider how you will access your roof box. Dual-side opening boxes offer the convenience of loading and unloading from either side of the vehicle. Additionally, look for models with secure locking mechanisms to protect your belongings from theft.

Installation and Compatibility

Before purchasing a roof box, ensure it is compatible with your vehicle and easy to install.

  1. Roof Racks: Most roof boxes require a roof rack system for attachment. Check if your vehicle has factory-installed roof racks or if you need to purchase an aftermarket system.
  2. Ease of Installation: Look for user-friendly installation features such as quick-release clamps or tool-free mounting systems. These features can significantly reduce the time and effort required to attach or remove the roof box.


A roof box is a valuable investment for anyone needing extra storage space for their vehicle. By carefully considering factors such as size, material, design, and installation, you can select the perfect roof box to meet your needs and enhance your travel experience. Whether you’re an adventure enthusiast, a family traveler, or someone who simply needs more room for daily transport, the right roof box can make all the difference in ensuring a comfortable and stress-free journey.