The Mitsubishi Mirage might be a small car by American standards, but it seems quite a few weight classes above Kei cars.

(I don't know about erikw's claims about small cars being illegal in the US. So I don't want to express an opinion on that.)

The Honda N-box is listed as an example of a Kei car and is larger than a Mirage in some dimensions and also heavier.

Thanks!

Mitsubishi Mirage isn't a small car by EU standards. It's a typical, average sized one.