A car roof box costs on average between 150 and 600 euros, depending on the volume, quality, and brand. Entry-level models start at around 150 euros, while high-quality mid-range models range between 250 and 400 euros. Premium roof boxes with a large volume and luxury finish easily cost 400 euros or more. The price depends heavily on what you expect from the box and how intensively you use it. In this article, we answer the most frequently asked questions regarding the cost of a roof box.

What determines the price of a roof box?

The price of a roof box is determined by four factors: volume, material, aerodynamics, and the quality of the locking and mounting system. The larger and more robust the box, the higher the price. Furthermore, a well-designed box saves fuel because it causes less air resistance, which saves money in the long run.

Material plays a major role. Cheaper roof boxes are made of thinner ABS plastic that deforms or cracks more quickly with temperature changes. More expensive models use thicker, UV-resistant material that lasts for years, even if the box sits on the roof for years in the full sun of the South of France or the snowy Alps.

In addition, the locking system counts. A case with a double-sided opening, a sturdy lock, and a simple mounting system costs more than a basic model, but the convenience and security are often worth the extra cost. Safety is not an afterthought: a TÜV-certified roof box has been tested for crash resistance, vibrations, water, and wind, so you know your cargo remains safe on the road.

How many liters do I need for my family?

For a family with two children, a roof box of at least 400 liters is recommended. If you are going skiing or taking a lot of luggage, 500 liters or more is sensible. A 300-liter roof box is sufficient for couples or small families on a short summer vacation with limited luggage.

A handy rule of thumb: allow about 100 liters per person. So, with four people, you will quickly need 400 liters, especially if skis, a stroller, or beach chairs need to come along as well. The trunk will then very quickly become too small for everything the family wants to take with them.

Also take into account the maximum roof load of your car. This is stated in the vehicle registration register or your vehicle's manual. A full roof box can easily weigh 50 to 75 kilograms, including contents, so always check this beforehand. Our online configurator helps you quickly determine which model and size fit your car.

What is the difference between cheap and more expensive roof boxes?

The biggest difference between a cheap and a more expensive roof box lies in the material quality, the aerodynamics, and the lifespan. A cheap box may function perfectly well for occasional use, but after a few years it is more likely to show slitages, creak at high speed, and offer less protection against rain and wind.

More expensive roof boxes are more dynamically shaped, which means they produce less wind noise and have less impact on fuel consumption. They close more tightly, have better locks, and are easier to mount. For families who make long trips to holiday destinations every year, this difference is noticeable, both in comfort and in total costs over the years.

A premium roof box easily lasts ten years or longer with normal use. If you calculate the purchase price over that period, the price difference compared to a cheaper model is often smaller than it seems. Moreover, brands like Hapro offer an extensive warranty and spare parts are available.

What extra costs are involved with a roof box?

In addition to the purchase price of the roof box itself, you must take into account the costs of roof racks, a possible mounting kit, and the higher fuel consumption during use. Roof racks cost between 80 and 250 euros extra, depending on the make and model of the car.

Here is an overview of the most common additional costs:

• Roof racks: 80 to 250 euros, depending on make and car
• Mounting kit or adapter: sometimes included, sometimes 20 to 50 euros extra
• High fuel consumption: Expect an extra 0.5 to 1 liter per 100 kilometers with a full trunk.
• Storage and protective case: 20 to 50 euros for a good cover that protects the suitcase at home

Some roof boxes come with a mounting system that fits most roof racks. With the Hapro, this is the patented Premium-Fit system, which allows you to mount the box without tools. This saves not only time but also the cost of extra adapters. Do you have questions about which combination suits your car? Feel free to contact us for personal advice.

When is a second-hand roof box a good choice?

A second-hand roof box is a good choice if you only use the box once or twice a year and do not want to spend a large budget. When buying second-hand, always check the condition of the lock, hinges, and seal. A box that no longer closes properly or leaks is a safety risk on the highway.

Also check if the model is compatible with your roof racks. Older roof boxes sometimes have a different mounting system that does not fit modern roof racks, which can result in extra costs or unsafe situations. Always ask about the age of the box and whether it has ever been involved in an accident or suffered a heavy impact.

For families who go on holiday every year and use the roof box intensively, buying new is the better investment in most cases. A new roof box with a warranty, TÜV certification, and a suitable mounting system offers greater peace of mind and, with proper use, will last a decade or longer.