William Anthony McGuire's hit three-act comedy, which opened on 25 August 1921 at the Sam H. Harris Theatre, ran for 430 performances and became a touring and stock staple. Richard and Geraldine Burton are about to be evicted as the result of living beyond their income. To help with moving costs, they decide to sell their new car. The new bride living next door, Marilyn Sterling, sets about convincing her husband, Gilbert, that they should buy the Burtons' car. However, this expenditure sets them on the same course that cost the Burtons their comforts. Matters are made worse when Gilbert's boss, Mr. Stapleton, turns up unexpectedly and is so shocked by the Sterlings' elaborate lifestyle that he fires Gilbert. After considerable effort, Gilbert manages to sell the car and convinces Stapleton to give him back his position. At this point, Marilyn indicates that a new vehicle will be required after all: a baby carriage. Motion picture versions of Six-Cylinder Love appeared in 1923 and 1931.
The Historical Dictionary of the American Theater. James Fisher.