According to a BMW M executive, the G90/G99 assembly line is currently split evenly between the four-door and five-door body styles.

Production of the new M5 is evenly split between the sedan and wagon body styles, according to BMW M exec Sylvia Neubauer.

The catalyst for this shift in time was BMW's iconic creation, the M5. It debuted in 1984 for the 1985 model year, and was an instant hit on the European market. According to owners and drivers ...