1. Inputs
We load package dimensions per box and vehicle constraints per config (opening, cargo length/width/height).
How Car Fit Check works
Car Fit Check is deterministic. For each package and seat configuration, we compare required dimensions against opening and cargo limits, then classify the result into YES, MAYBE, or NO using fixed thresholds.
Computation flow
2. Orientation checks
Each package is evaluated across eligible orientations (for example straight or diagonal), then the best valid orientation is selected.
3. Margin classification
The tightest gap of the best orientation sets the result, by the rules under Result definitions below.
4. Page synthesis
The result page presents package table, limiting factor, assumptions, FAQ, and alternatives generated from deterministic rules.
What we measure (glossary)
Opening width & opening height
These are the pass-through measurements at the trunk hatch. The opening height is the clear gap above the loading sill, because a box slides in over the sill, not from the floor of the boot. A car with a boot lid is loaded from above, so there the full height of the boot counts. If a box cannot clear the opening, it will not load, even if it would fit deeper inside.
Boot floor width (narrow point)
This is the usable width inside the trunk between wheel arches or interior trim. It often differs from opening width.
Boot length (seats up vs seats down)
We evaluate both configurations separately because usable length and geometry can change significantly when seats fold.
Why we show margins
A margin is the real gap at one point: the car's measurement minus the box's. Positive is room to spare, negative is how much the box is too big. Nothing is taken off, so you can check every margin against the measurements printed on the same page.
Result definitions
YES
There is at least 2⅜″ to spare at the tightest point, in the best way the box can go in.
MAYBE
It fits on paper, but with less than 2⅜″ to spare, so trim, the parcel shelf or the loading angle can decide it.
NO
The box is bigger than the space at its tightest point, whichever way it goes in.
Important assumptions
- Fit is evaluated per package, not guaranteed as full stacked cargo packing.
- Real-world trunk obstacles can reduce usable space in tight scenarios.
- Derived dimensions are explicitly flagged in assumptions and confidence.