We sell both, so take this as an honest assessment rather than a sales pitch: for most people walking through our door, a good used box is the better purchase. Here is the reasoning, and the cases where it does not hold.
The greenest box is the one that already exists
A roof box is a large moulded plastic shell. That shell is the whole environmental story — making it, shipping it across an ocean, and eventually disposing of it. Everything after that is essentially free, because the box does not wear out the way a battery or a laptop does.
And these things last. A shell kept out of the sun, with its seals maintained and its hardware intact, will outlive several of the cars it rides on. What sends most boxes to the kerb is not the shell failing — it is a lost key, a broken clamp, or somebody changing vehicles. All fixable problems.
So the choice is rarely "new box or no box". It is "put an existing box back on the road, or manufacture and ship another one while a perfectly good shell goes to landfill". A roof box is also an awkward thing to dispose of: bulky, light, and not something most municipal recycling will take.
Nothing we do keeps more plastic out of the waste stream than getting a used box back onto a roof.
The savings are front-loaded, and they are real
Roof boxes depreciate the way most gear does: steeply at first, then barely at all. A box loses a large share of its value the moment it leaves the shop, and then holds roughly steady for years as long as it stays sound. Buying used means letting someone else absorb that first drop.
What that saving buys you is worth thinking about:
- A bigger or longer box than your budget would stretch to new — which matters a great deal if you are carrying skis.
- A box and a rack together, if your vehicle does not have crossbars yet.
- Professional installation and a spare key, with money left over.
- A season pass, frankly, which is a better use of the difference than a newer shell.
What actually matters when you buy used
Condition on a roof box is not about looks. In order of what we check:
- Locks and a full set of keys. The most important item on the list, and the most common thing missing from a private sale.
- Complete mounting hardware. Clamps, U-bolts and knobs, all present and matched to the box.
- Seals and hinges. Supple gasket, lid that closes evenly, hinges with no cracks.
- The shell around the mounting points. This is where stress cracks start, and the one form of damage we will not sell past.
- Scuffs and fading. Cosmetic, and honestly the reason a good box is affordable.
That list is the same one we use when valuing a box coming the other way — the detail is in how our trade-in credit works.
How our used stock gets vetted
Every used box we put out has been through that inspection, cleaned, and confirmed to have working locks with keys and the hardware to mount it. If something needs a new seal or a replacement clamp, we fit it before the box goes on the floor rather than leaving it for you. And we test fit to your vehicle before you buy, used or new alike.
It also means the box you trade in does not disappear. It gets checked, tidied and sold on to the next family — which is the loop that makes the whole thing work.
When new is the right call
There are honest exceptions, and we will tell you when you have hit one:
- An unusual fitment that nothing in the used stock covers — a very short roof, a very wide bar spread, or a specific low-profile requirement.
- You want the manufacturer's warranty and the peace of mind that comes with it.
- A specific recent feature — dual-side opening, a particular mounting system, a certain finish.
- Nothing used is in stock in your size and you need it this weekend.
That is a real list, not a hedge. But it is a shorter list than most people expect when they walk in assuming new is the default.
Come look at both
The easiest way to settle it is to see a used box and a new one side by side with your car in the lot. Most people are surprised by how little separates them once the used one has been through our bench.