
KALLAX Shelf unit, white, 16 3/8x57 5/8″
+16⅜″ margin
All items that fit an Audi A6 Avant 2024
Maybe, it's a tight fit.

Fit Details

BILLY Bookcase, white, 31 1/2x11x79 1/2″
Box: 81¼″ × 11¾″ × 5″ · 88 lb 1 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:+1⅛″, tight
Limited by
Limiting factor:Cargo length
Best orientation:Diagonal
Vehicle limits

Opening width / height above sill
41″ / 28″
Cargo width / height
39⅜″ / 28¾″
Cargo length seats up / down
46⅛″ / 77⅛″
Loading sill height
25¼″
Audi A6 Avant 2024
Measurements last checked and updated on Oct 21, 2026
Helpful tips
Use these loading tips to improve your chances of fitting BILLY Bookcase, white, 31 1/2x11x79 1/2″ in Audi A6 Avant 2024.
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.
Alternatives that fit in Audi A6 Avant 2024
Ranked by fit margin and package-dimension similarity. This improves as we index more items.
About the Audi A6 Avant 2024 boot
Length is easy in the A6 Avant. The floor runs 46⅛″ with the rear seats up and 77⅛″ with them folded, and it is 39⅜″ wide at its narrowest, so long flat packs and several boxes both have room. The tailgate opening measures 41″ across, with 28″ of clear height over the loading sill, and the boot is 28¾″ tall at the opening, measured from its floor, so it suits low, long boxes better than tall ones. The sill sits at 25¼″, and the floor is only ¾″ below it. Once a box is on the sill, push it in: there is barely a step to lower it down.
About the BILLY Bookcase, white, 31 1/2x11x79 1/2″ package
The white BILLY is packed in one long, narrow box: 81¼″ × 11¾″ × 5″. It weighs 88 lb 1 oz, and at that length you want a second person to carry it. Loaded end first, it asks little of the opening: only room for its 11¾″ by 5″ end. Lying flat and straight, it needs 81¼″ of floor for the longest side. On its side and at an angle, it needs less floor but more width at the opening, and the verdict on this page shows whether that works in your boot. Lift it level between the two of you and keep it that way until the whole box is in the boot.
Frequently asked questions
Find quick answers about fit for BILLY Bookcase, white, 31 1/2x11x79 1/2″ in Audi A6 Avant 2024, including seats up vs seats down, limiting factor, best orientation, and package-by-package margins.
Will BILLY Bookcase, white, 31 1/2x11x79 1/2″ fit in Audi A6 Avant 2024?
Maybe. With seats down, it fits on paper with 1⅛″ 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 +1⅛″ 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 +1⅛″ 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 (+1⅛″). 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 (+1⅛″ at Cargo length).