The Opel Karl is a city car with a hatchback manufactured by GM Korea and marketed by Opel as a rebadged and restyled variant of the fourth-generation Chevrolet Spark (M400), replacing the Suzuki-sourced Agila in Opel's range. Named after Adam Opel's eldest son Carl, the city car was discontinued following the sale of Opel to PSA Group in 2019. General Motors marketed a rebadged variant in the United Kingdom as the Vauxhall Viva, resurrecting an old nameplate from 1963 to 1979.