The name "Master Six" was introduced for high-end cars sharing the GM B platform with the Oldsmobile Model 30, and were powered by the 255 cu in (4.2 L) Buick inline-6 engine released the year before.

Buick had developed a market reputation as being a conservative luxury car, while the Cadillac and the Packard Six were more flamboyant, extravagant and expensive.

[2] To promote its durability, Buick President Harry H. Basset had a Touring Sedan driven around the world via a dealer-to-dealer network, where each location was responsible for driving the car to the next destination and having the log book signed for authenticity.

All were powered by the overhead valve Buick Straight-6 engine, with multiple body styles, and starting in 1926 used the newly established GM B platform, which it shared with Oldsmobile L-Series.

[1] Roadsters and touring sedans had the ability to fold the windshield forward on top of the cowl for open air driving.