The catch
Thule Motion 3 XL Low
An upright hard case may not fit when there’s less internal headroom.
Side by side
Thule Motion 3 XL Low vs Thule Motion 3 XL compared: Low helps with overhead clearance but does not fix a short roof or hatch conflict
Quick verdict
Measured overhead clearance as the limiting factor, with gear that packs flat, points to the Motion 3 XL Low. Taller cases and bulkier camping gear point to the regular Motion 3 XL. Both take skis up to 200 cm and need the same hatch clearance, so the lower shell does not solve a short roof.
Before you buy
Why, and what it costs you
Work out the garage entrance before deciding on volume
If the tops of the crossbars measure 70 inches, the published heights point to roughly 82 inches for Low and 85 inches for regular XL. Regular XL is already taller than an 84-inch entrance. Low should get a real installed-height check with a safe margin. Do not pass it automatically.
Where this comes from
Assumed: a 70-inch bar-top height and an 84-inch opening. Add 12 or 15 inches. Real clearance can shift with vehicle loading, the slope of the driveway and the lowest point on the route.
The catch
Thule Motion 3 XL
Brings 3 inches of extra height above the crossbars.
Thule Motion 3 XL Low
- Why pick it
- The added height of the regular XL does not fit within your garage clearance.
- The lower internal profile works for your long skis and soft bags.
- The catch
- An upright hard case may not fit when there’s less internal headroom.
Thule Motion 3 XL
- Why pick it
- The Low’s documented internal height is less than an upright case needs.
- More packing volume is what you need, and the ski-length limit stays put.
- The catch
- Brings 3 inches of extra height above the crossbars.
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What this page compares
Garage headroom and suitcase clearance come first when choosing a low roof box. Ski length and hatch threshold are the same for both.
Measured overhead clearance as the limiting factor, with gear that packs flat, points to the Motion 3 XL Low. Taller cases and bulkier camping gear point to the regular Motion 3 XL. Both take skis up to 200 cm and need the same hatch clearance, so the lower shell does not solve a short roof.
Which one fits
Pick the situations that sound like you
A garage entrance with little room
Low rises 12 inches above the bars compared with 15 inches, yet you should check the whole route and leave clearance to spare.
- Thule Motion 3 XL Low
- Measure Low installed
- Thule Motion 3 XL
- Regular XL may be too tall
A rigid case that needs 13 inches of height
The conservative internal height is higher on regular XL. Neither spec shows that a given case footprint will fit.
- Thule Motion 3 XL Low
- Too tall for manual height
- Thule Motion 3 XL
- Candidate after shape check
The car’s Thule front clearance comes to 51 inches
Each needs more than 52 1/8 inches, which means you’d need a different box or an approved rack position.
- Thule Motion 3 XL Low
- Below threshold
- Thule Motion 3 XL
- Below threshold
On the trip you bring 195 cm skis and soft duffels
Weigh headroom against packing volume, once you’ve checked the usable shape of the low shell.
- Thule Motion 3 XL Low
- Within ski limit
- Thule Motion 3 XL
- Within ski limit
In practice
Differences you will notice
Work out the garage entrance before deciding on volume
If the tops of the crossbars measure 70 inches, the published heights point to roughly 82 inches for Low and 85 inches for regular XL. Regular XL is already taller than an 84-inch entrance. Low should get a real installed-height check with a safe margin. Do not pass it automatically.
How we worked this out
Assumed: a 70-inch bar-top height and an 84-inch opening. Add 12 or 15 inches. Real clearance can shift with vehicle loading, the slope of the driveway and the lowest point on the route.
An upright 13-inch case sets the boxes apart for packing
Low’s conservative manual height is 10 7/8 inches, so a case that has to stand 13 inches tall is too tall for it. Regular XL lists 13 3/4 inches and stays in the running. Check its curved sides and the footprint of the case before you assume the lid will close.
How we worked this out
Set the case height against the current manual dimensions. The pages list larger internal heights, which is why the lower manual figures are used. Usable volume is not assumed to be rectangular.
A lower box doesn’t lessen the hatch requirement
If a vehicle measures only 51 inches by Thule’s front-clearance method, it falls below the published threshold for both boxes. A low garage and short hatch clearance are separate constraints. Low fixes neither the hatch geometry nor the problem of skis longer than 200 cm.
How we worked this out
Each model needs more than 52 1/8 inches and is rated for skis up to 200 cm. A hypothetical 51-inch measurement falls under both thresholds.
Option A
Thule, 639450 Black Glossy
Thule Motion 3 XL Low
This 14 cu ft box opens on both sides and takes skis up to 200 cm. It stands 12 inches above the crossbar by its published figure and has less internal height than the regular XL.
- Best for
- The added height of the regular XL does not fit within your garage clearance.
Facts we checked
- Rise above the crossbar: 12 in
- Cautious internal height: 10 7/8 in, per the current manual
- Volume for cargo: 14 cu ft
- Longest ski length: 200 cm
Option B
Thule, Motion 3 XL Black Glossy
Thule Motion 3 XL
Capacity is 18 cubic feet, and gear up to 200 centimeters long fits inside.
- Best for
- The Low’s documented internal height is less than an upright case needs.
Facts we checked
- Rise above the crossbar: 15 in
- Cautious internal height: 13 3/4 in, per the current manual
- Volume for cargo: 18 cu ft
- Longest ski length: 200 cm
Spec by spec
Where they really differ
| Spec | Thule Motion 3 XL Low | Thule Motion 3 XL | In practice |
|---|---|---|---|
| Height above crossbar | 12 in | 15 in | Low takes 3 inches off the published added-height allowance. |
| Conservative internal height | 10 7/8 in in current manual | 13 3/4 in in current manual | Check the real footprint of the packed object and the tapered shell, along with its height. |
| Cargo volume | 14 cu ft | 18 cu ft | Regular gives bulky items more room, though its ski rating is no longer. |
| Maximum ski length | 200 cm | 200 cm | In this pair, a taller shell doesn’t make room for a longer ski. |
| Thule front-clearance threshold | More than 52 1/8 in | More than 52 1/8 in | For either model, measure from the front crossbar to the hatch the way Thule does. |
Trade-offs
What each pick costs you
With Thule Motion 3 XL Low
- A lower shell doesn’t ease the hatch-clearance requirement.
With Thule Motion 3 XL
- More volume leaves the 200 cm ski rating where it was.
Change of plan
When the answer changes
A 13-inch rigid case that can’t lie any flatter
Go with Thule Motion 3 XL. Regular XL’s manual gives a 13 3/4-inch internal height, though case footprint and shell taper still apply.
Thule’s hatch method gives the car just 51 inches
Neither model fits. Front clearance of more than 52 1/8 inches is required by each box.
Decision guide
How to decide
Measure the whole route into storage
Write down the height from the ground to the top of the fitted crossbars, then add the published box height above them. Look at the garage door, the opener and any lower obstruction farther inside. That arithmetic can rule out an oversized setup, but it cannot stand in for measuring the final loaded vehicle and leaving room for slope or suspension changes.
Start with the tallest object
Extra volume in the regular XL pays off most when a case, folded chair or other rigid item cannot be flattened. For screening, use the lower internal-height figures from the current manual, because the product pages differ. Lay out the real object and allow for the lid’s taper before you treat a height-only result as a fit.
Headroom should not rest on a hatch assumption
Both boxes have a 200 cm ski rating and the same Thule hatch threshold. Choosing Low is a decision about vertical packaging and does not squeeze a long box onto a shorter roof. Complete the vehicle-specific bar, clamp and hatch checks before you consider either model ready for the trip.
What this page can’t tell you
- Weight figures on the current page and in the manual conflict, so no comparative payload advantage is claimed.
- The lower shape is not taken to imply any measured noise, fuel-use or aerodynamic benefit.
By the numbers
What the data shows
What we found across the roof cargo boxes we compare, plus the checked facts behind each finding.
Show the facts and the math
| Product | Needs it meets | Facts we checked | Sources |
|---|---|---|---|
| Thule Motion 3 XL Low |
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| Thule Motion 3 XL |
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Ready to buy
See today’s price and what owners say
Open either model on Amazon for the current price, customer reviews and delivery options.
Thule Motion 3 XL Low
The added height of the regular XL does not fit within your garage clearance.
See price & reviews on AmazonThule Motion 3 XL
The Low’s documented internal height is less than an upright case needs.
See price & reviews on AmazonEach link opens in a new tab.
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