KALLAX Shelf unit, white, 16 3/8x57 5/8″
+15⅛″ margin
All items that fit a Peugeot 5008 2021
Will fit in a ?
Maybe, it's a tight fit.
It might fit, but it's tight: BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2″ is borderline diagonally in a Peugeot 5008 2021 with seats down.
Fit Details
With seats down, It's close. This package fits on paper with ⅝″ to spare at cargo length, best loaded diagonal. See the Helpful tips section below for practical loading suggestions. We're about 75% confident in this estimate.
BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2″
Box: 81¼″ × 11¾″ × 5″ · 86 lb 15 oz
Based on IKEA US (United States).
Package dimensions last checked and updated on Oct 21, 2026
Package
Status
Limiting factor
Best orientation
Package #1
81¼″ × 11¾″ × 5″
Status:+⅝″, tight
Limited by
Limiting factor:Cargo length
Best orientation:Diagonal
Vehicle limits
Opening width / height above sill
44½″ / 31⅛″
Cargo width / height
45¼″ / 31½″
Cargo length seats up (third row folded) / down
41⅜″ / 74″
Loading sill height
27⅛″
Peugeot 5008 2021
Measurements last checked and updated on Oct 21, 2026
Helpful tips
Use these loading tips to improve your chances of fitting BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2″ in Peugeot 5008 2021.
Use available cargo length
Push the package fully toward the seat backs to use all cargo length.
Load diagonally first
Load diagonally first, then straighten once inside.
Clear real-world obstacles
Clear the trunk before loading. Existing cargo, trunk cover, and wheel-arch bumps can reduce usable space.
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About the Peugeot 5008 2021 boot
Fold the second row of the 5008, with the third row already down, and the boot floor runs to 74″. That length is for a pack laid straight: some longer packs fit at an angle, on their side. In 5-seat mode, with only the third row folded, you have 41⅜″ of floor, and with all seven seats up just 13⅜″. Above the loading sill, the opening gives you 44½″ of width and 31⅛″ of height. The floor is 45¼″ across at its narrowest, a little wider than the opening, with room for boxes side by side. Put the longest pack in first, then fill the space around it.
About the BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2″ package
You get the black oak effect BILLY in a single box, 81¼″ long, 11¾″ wide and 5″ thick. It weighs 86 lb 15 oz, and over that length the weight is hard to control, so plan on two of you, one at each end. Lying straight, it needs 81¼″ of boot floor, though its width and thickness still matter. Lift together on a count, so neither of you takes the full weight, even for a second. Set it down the same way, both ends at once.
Frequently asked questions
Find quick answers about fit for BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2″ in Peugeot 5008 2021, including seats up vs seats down, limiting factor, best orientation, and package-by-package margins.
Will BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2″ fit in Peugeot 5008 2021?
Maybe. With seats down, it fits on paper with ⅝″ to spare at Cargo length, less than the 2⅜″ a clear yes needs. Best orientation: diagonal.
What is the tightest part?
The limiting factor is Cargo length, with +⅝″ margin in seats down.
What can I try to make it work?
Use diagonal loading and focus on cargo length. Push the package fully toward the seat backs to use all cargo length. Load diagonally first, then straighten once inside.
Can I load it diagonally?
Yes, diagonal is the best orientation for this check, with +⅝″ around the limiting point.
Which loading orientation works best?
Diagonal is the best orientation for this result in seats down.
Does it fit with seats up or seats down?
Seats up: No (-18⅛″). Seats down: Maybe (+⅝″). Default selection follows YES > MAYBE > NO.
What do YES, MAYBE and NO mean here?
YES means there is at least 2⅜″ to spare at the tightest point, in the best way the box can go in. MAYBE means it fits on paper, but with less than 2⅜″ to spare, so trim, the parcel shelf or the loading angle can decide it. NO means the box is bigger than the space at its tightest point, whichever way it goes in. Every margin on this page is that real gap: the car's measurement minus the box's.
Do I need to fold the seats?
Results differ by configuration. Seats up is No and seats down is Maybe.
What could change the result in real life?
Cargo liners, wheel-arch bumps, the trunk cover, and items already in the trunk can reduce usable space. Measure the tightest point if the fit is close.
How tight is this fit?
This result is in the borderline band (+⅝″ at Cargo length).