Trunk comparison: Ford Focus Wagon vs Tesla Model Y

Key Differences (more than 10%)
Three differences stand out from the data: The usable width at the narrowest point is +7.1 in (≈19%) larger in the Ford Focus Wagon than in the Tesla Model Y.
The Tesla's loading edge is +2.8 in (≈11%) higher above the ground. And the depth of the trunk (distance from loading edge to trunk floor) is +0.8 in (≈100%) greater in the Ford than in the Tesla.
Impact on Usability
The greater width at the narrowest point in the Focus means: wider or bulky items (large boxes, wide suitcases, flat furniture parts) can more often be transported without rotation or repositioning. In the Model Y, such items fit more tightly and may require angling or folding down seats.
The higher loading edge in the Tesla (≈11% higher) mainly affects loading and unloading heavy items: more lifting strength is needed for heavy suitcases, toolboxes, or furniture, making loading and unloading more strenuous.
For rolling suitcases or trolleys, a lower loading edge is advantageous as it allows easier direct rolling in.
The greater depth of the Focus (the floor sits lower relative to the loading edge) creates a small "well": small parts and low items lie more securely in the trunk and are less likely to slide out.
In the Tesla, the interior floor is closer to the loading edge, which makes sliding in long, flat loads easier but offers slightly less security for very small items near the edge.
Besides these points, there are differences in length (Tesla slightly longer with seats folded +5% and with first row upright +7%) as well as smaller differences in opening height (+3% Ford) and opening width (+7% Ford), but these have much less impact on usability.
In summary: Those who frequently transport wide, bulky cargo or value a slightly deeper loading well benefit from the Ford Focus Wagon.
Those who need a bit more loading length and can live with a higher loading edge are better off with the Tesla Model Y – however, for heavy, regular loading and unloading, the Tesla's higher loading edge is disadvantageous.