The Excalibur automobile was a car styled after the 1928 Mercedes-Benz SSK by Brooks Stevens for Studebaker. Stevens subsequently formed a company to manufacture and market the cars, which were conventional under their styling.^[1]

A prototype premiered at car shows in 1964, fitted on a Studebaker chassis and using a 290-horsepower Studebaker 289 V-8.

Studebaker almost immediately ceased its operations, ending the availability of that engine.^[2]

Stevens subsequently obtained engines from General Motors through his friends, GM executives Ed Cole and Semon "Bunkie" Knudsen. These were Chevrolet 327s in 300-bhp Corvette tune, making the 2100-pound Excalibur a strong performer. With the standard 3.31:1 rear axle, acceleration from 0-60 mph took less than six seconds.^[3] Projected top speed was 134 mph.^[4]

Over 3,500 Excalibur cars were built, all in Milwaukee, Wisconsin.^[2] The American comedian Phyllis Diller was a notable proponent of the Excalibur automobile, and owned four of them.^[5]

The company failed in 1986 but was revived several times.^[6] Production of the Excalibur continued until 1990.^[7]