How many smart cars were imported into the US?

There's no single, readily available number for the total number of Smart cars imported into the US. Data on vehicle imports is often tracked by model year and may not be consistently categorized as "Smart car" across all sources. To get an accurate number, you would need to consult detailed import data from sources like the U.S. Department of Transportation or the relevant automotive industry associations, and even then, aggregating the data would require significant effort.