There's no single definitive answer to the most common car driven in the 1950s, as data collection wasn't as comprehensive or standardized then as it is now. However, the
Chevrolet brand consistently held a significant market share throughout the decade, making it a very strong contender for the title. Specific models within the Chevrolet lineup, like the
Chevrolet Bel Air, were also extremely popular.
Other brands that frequently appear in discussions about top-selling cars of the 1950s include Ford and Plymouth. But without precise registration data across the entire decade and the US (and potentially other countries), pinpointing the absolute *most* common car remains difficult.