Plymouth was a very successful brand of Chrysler automobiles. Plymouths were manufactured from 1922 to 2001. For a long time prior to the 1960s, Plymouth was considered the number three most popular American make, second only to Ford and Chevrolet. It was known as the 'budget car' of these three makes. Although Plymouth saw lots of success in the '50s, the company suffered grievously from 1960 to 1962.

Part of the problem was Plymouth's sister line, Dodge. Despite the success of the Plymouth Valiant and the Plymouth Duster, Chrysler's economic troubles combined with the emerging success of Dodge led to plummeting consumer recognition of the Plymouth brand.

In the late 1970s, Chrysler was acquired by the German company Dalmer-Benz AG. Several Plymouths were made under the Dalmer-Benz banner, including the PT Cruiser and the Prowler. However, Plymouth didn't have much to offer beyond what Dodge was giving customers. Moreover, Plymouth dealers sold Dodge cars, whereas Dodge dealers sold nothing but Dodge cars and trucks.

The civil war within Chrysler ultimately led to the discontinuation of Plymouth in 2001, following a limited edition run of Plymouth Voyagers. Some of the more notable makes of Plymouth cars include the 1935 PGA Touring Sedan, the Barracuda (which was made between 1964 and 1974), and the Reliant, which was released in 1987. The 1979 released Plymouth Champ, which was later remarketed as the Mitsubishi Barrage, won lots of acclaim in automotive circles. Also quite popular were the Plymouth Prowler and the Plymouth Road Runner.