NORDEN Gateleg table, birch, 26/89/152x80 cm
+7½″ margin
WillBILLY Bookcase, black oak effect, 31 1/2x11x79 1/2 "fit in aTesla Model Y 2023?
No, it won't fit.
It will not fit in this setup: BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2 " is too large for a Tesla Model Y 2023 with seats up.
Fit Details
With seats up, This package will not fit in this setup. The blocker is opening width, and you're short by 19″ even with diagonal loading. We're about 95% 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 Jun 18, 2026
Package
Status
Limiting factor
Best orientation
Package #1
81¼″ × 11¾″ × 5″
Status:19″ short
Limited by
Limiting factor:Opening width
Best orientation:Diagonal
Vehicle limits
Opening width / height
39¾″ / 27⅛″
Cargo width / height
37⅜″ / 27⅛″
Cargo length seats up / down
43¾″ / 76⅜″
Loading sill height
27½″
Tesla Model Y 2023
Measurements last checked and updated on Mar 10, 2026
Helpful tips
Use these loading tips to improve your chances of fitting BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2 " in Tesla Model Y 2023.
Optimize opening width
Keep the narrow edge leading while entering the opening.
Load diagonally first
Load diagonally first, then straighten once inside.
Try fitting alternatives
Check the Similar items that fit section for safer alternatives.
Alternatives that fit in Tesla Model Y 2023
Ranked by fit margin and package-dimension similarity. This improves as we index more items.
About the Tesla Model Y 2023 boot
The Model Y boot is long and flat, with a deep floor even before you fold. The opening is 39¾″ wide × 27⅛″ tall, and the floor already runs 43¾″ with the seats up, stretching to 76⅜″ folded, a gain of 32⅝″. The sill height is 27½″ with a 0″ drop, so the floor sits level with the lip and items slide straight in. The opening is on the low side, so tall boxes can catch on the way through. It is excellent for long flat-packs and big shops, less so for very tall items. Lead with the long edge and slide it in flat.
About the BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2 " package
The BILLY bookcase comes as a single long, flat box: 81¼″ × 11¾″ × 5″ and 86 lb 15 oz. It is the length that catches you out, not the weight on its own. That long panel wants a flat floor, which on most cars means folding the rear seats first. The board is rigid and will not flex around a wheel arch or a short boot, so it has to lie straight. An estate, a folded-seat hatchback, or an SUV takes it comfortably. Load it long-edge first, keep it flat, and guard the corners, because a knock at this weight cracks the edge.
Frequently asked questions
Find quick answers about fit for BILLY Bookcase, black oak effect, 31 1/2x11x79 1/2 " in Tesla Model Y 2023, 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 Tesla Model Y 2023?
No. With seats up, it is short by 19″ at Opening width, even with diagonal loading.
What is the tightest part?
The limiting factor is Opening width, with -19″ margin in seats up.
What should I do instead?
Use the Helpful tips & alternatives section to choose a smaller item, different orientation, or split-load plan.
Is the trunk opening the issue?
Yes. The tightest constraint is at the opening (Opening width) with -19″ margin.
How tight is this fit?
This result is in the clear no-fit band (-19″ at Opening width).
Does it fit with seats up or seats down?
Seats up: No (-19″). Seats down: No (-1¼″). Default selection follows YES > MAYBE > NO.
Why does it not fit?
The blocker is Opening width. The worst margin is -19″ in seats up, so clearance is below the required buffer.
Can I load it diagonally?
Yes, diagonal is the best orientation for this check, with -19″ around the limiting point.
Which loading orientation works best?
Diagonal is the best orientation for this result in seats up.
How confident is this result?
Confidence is 95 out of 100 based on available dimensions and margin tightness.