Compared set
15 of 26 models checked match every need here: “Pack for a family of four”.
15 matching models from 26 checkedBest for this need
Best roof box for a family of four
Our pick
Thule Motion 3 XXL
Thule Motion 3 XXL offers the most verified volume in this set at 21 cubic feet, provided the roof and hatch clear its size and weight.
Why it fits this need
- The box holds 21 cubic feet.
- It accepts gear up to 215 centimeters long.
- Main trade-off
- It is one of the longest and widest boxes here, so hatch and roof length deserve an exact check.
- Choose Yakima SkyBox NX XL instead when
- the deciding need is pack for a family of four
More reasons behind this pick
- The box uses dualside access.
- Its published exterior size is About 91.3 x 36.2 x 18.1 inches.
Thule Motion 3 XXL offers the most verified volume in this set at 21 cubic feet, provided the roof and hatch clear its size and weight.
What the facts say
What the comparison shows
Useful conclusions from the current roof cargo boxes comparison, followed by the checked facts used to reach them.
Why it helps
Thule Motion 3 XXL has the largest published cargo volume in the comparable set at 21 cu ft.
- Thule Motion 3 XXL
- 21 cu ft
- Category median
- 16 cu ft
- Comparable models
- 20 of 26
See the checked facts and calculation notes
Match countThe count uses the current product-to-need assignments for “Pack for a family of four”. A need with no documented match does not count.
Calculation noteThis compares published exterior-category volume. Shape, mounting hardware and long gear can reduce practical packing space. The median covers 20 of 26 models with comparable published figures.
| Product | Needs matched | Checked facts | Source records |
|---|---|---|---|
| Thule Motion 3 XXL |
|
| |
| Yakima SkyBox NX XL |
|
| |
| Rhino-Rack MasterFit 530L |
|
|
What matters in practice
How to choose for this need
Thule Motion 3 XXL offers the most verified volume in this set at 21 cubic feet, provided the roof and hatch clear its size and weight.
What decides this choice
The box holds 21 cubic feet. It is one of the longest and widest boxes here, so hatch and roof length deserve an exact check.
Why Thule Motion 3 XXL leads
The box holds 21 cubic feet. It accepts gear up to 215 centimeters long.
When an alternative fits better
Choose Yakima SkyBox NX XL when the deciding need is pack for a family of four. Choose Rhino-Rack MasterFit 530L when the deciding need is pack for a family of four.
What this comparison cannot tell you
- This screen cannot certify vehicle compatibility.
- Published volume does not guarantee a particular suitcase layout.
- Roof limits vary by vehicle configuration.
3 options
Our pick and alternatives
Thule, Motion 3 XXL Black Glossy
Thule Motion 3 XXL
The box holds 21 cubic feet. It accepts gear up to 215 centimeters long.
Winner whencarry skis without folding the seats and pack for a family of four
Decisive facts
- The box holds 21 cubic feet.
- It accepts gear up to 215 centimeters long.
Trade-off
It is one of the longest and widest boxes here, so hatch and roof length deserve an exact check.
Yakima, SkyBox NX 18 XL
Yakima SkyBox NX XL
The box holds 18 cubic feet. It accepts gear up to 195 centimeters long.
Choose instead whenthe deciding need is pack for a family of four
Decisive facts
- The box holds 18 cubic feet.
- It accepts gear up to 195 centimeters long.
Trade-off
Its 195 cm ski limit is just short of 200 cm Nordic skis.
Rhino-Rack, RMFT530A
Rhino-Rack MasterFit 530L
The box holds 18.7 cubic feet. It accepts gear up to 210.8 centimeters long.
Choose instead whenthe deciding need is pack for a family of four
Decisive facts
- The box holds 18.7 cubic feet.
- It accepts gear up to 210.8 centimeters long.
Trade-off
The 85-inch shell needs careful hatch and roof-length checks.
Ready to choose?
Check the price. Read the owner reviews.
Our pick for this need
Thule Motion 3 XXL
The box holds 21 cubic feet.
See price & reviews on AmazonChoose instead when
Yakima SkyBox NX XL
the deciding need is pack for a family of four
See price & reviews on Amazon