What are the Least common car in us?

There's no definitive, publicly available list of the absolute *least* common cars in the US. Data on car registrations is often aggregated at higher levels (make and model, sometimes even just make), and very rare cars don't have enough sales to register prominently in these broader reports.

To find the least common cars, you'd need very granular data that's not typically released by automotive registration authorities for privacy reasons. Even then, true rarity would depend on considering factors like:

* Year: A model might be rare simply because it's very old.

* Trim level: A specific trim package within a model could be significantly less common than the base model.

* Geographic location: A car might be extremely rare in one state but more common in another.

Instead of a definitive "least common" list, you'd find mentions of extremely rare vehicles through specialized automotive publications and enthusiast forums focusing on specific makes or models. These often highlight limited edition, exotic, or highly customized cars.