BMW offered the sedan as the ideal all-round car for customers working with a budget. The all-steel body had everything necessary in a car for the family: complete protection against adverse weather conditions, space for three adults or two adults with children, wide doors with convenient wind-down windows for easy entry, comfortable seats and a fully-fledged interior upholstered in fabric material. Curtains adorning the rear and side windows along with ceiling lighting created a homely atmosphere. There was even space for a small trunk behind the seats. The advertising department created the apt slogan "Bigger on the inside than the outside" ("Innen größer als außen").