The Ambassador was the top-of-the-line automobile produced by the American Motors Corporation (AMC) from 1958 until 1974. The vehicle was known as the AMC Ambassador, Ambassador V-8 by Rambler, and Rambler Ambassador at various times during its tenure in production. Previously, the name Ambassador had applied to Nash's "senior" full-size cars. The Ambassador nameplate was used continuously from 1927 until 1974 (the name being a top-level trim line between 1927 and 1931); at the time it was discontinued, Ambassador was the longest continuously used nameplate in automotive history.