When Tesla pushes a firmware update that unlocks faster acceleration or adds a new driver‑assist feature, the headline price of a new Model 3 jumps by a few thousand dollars. The same update, however, instantly makes the previous‑generation hardware look dated, and owners of cars that lack the new code see their trade‑in offers evaporate.

The chain is simple: a software‑driven performance boost raises the marginal utility of the newest unit, so buyers are willing to pay more for “the latest version.” Because the improvement is delivered remotely, the older cars cannot be retrofitted at a comparable cost, turning the upgrade into a de‑facto version lock.

Resale markets, which rely on the premise that a used car’s features are a stable baseline, now price those older units as if they were obsolete, compressing the used‑car margin. The paradox is that the very tool meant to increase lifetime value—continuous upgrades—creates a hidden capture leak that erodes secondary‑market revenue and weakens the brand’s perceived durability.