Which Tesla model was the first to use a structural battery pack?

The Tesla model that was first to use a structural battery pack was the Tesla Model Y.

Tesla's structural-pack design makes the battery enclosure part of the vehicle's body structure rather than treating the battery as a separate module simply bolted into the floor. The approach can reduce component count, improve body rigidity, and support more efficient factory assembly. Tesla paired the design with its large-format 4680 cells.

The first customer vehicles using this configuration came from Tesla's Gigafactory Texas in 2022. Tesla's April 2022 company update said it had delivered the first vehicles with in-house 4680 cells, single-piece front castings, and structural battery packs, and identified them as Model Ys.

The wording can cause confusion because not every Model Y has a structural pack. Tesla also produced Model Ys with conventional 2170 cells and non-structural battery packs, depending on factory, version, and production period. The Cybertruck later used a structural pack as well, but it was not the first Tesla model to do so.