- 3.0Si, 3.0Li, 3.0CSi (2985 cc, 200 or 195 PS (143 kW; 192 hp), depending whether Bosch D-Jetronic or L-Jetronic was installed)
For the 1972 model year, the 2500 was dropped while the M30 engine size in the Bavaria was increased to 3.0 liters. The former 2800 was now called the 3.0 S reflecting the 3.0 liter engine. These two models, the 3.0 S and the Bavaria, made up the North American E3 sedan line-up for 1972 through 1974. However, in 1974 the E3 received the ungainly, federally mandated 5 mph (8.0 km/h) bumpers front and rear significantly altering its profile.
In 1975 BMW introduced fuel injection to the US market for the big-six M30 motor replacing the twin two-barrel Zenith carburetors used on the M30 motor since its inception. The Bavaria was dropped from the line-up, and the 3.0Si was now the highest end of the BMW model range (the "i" added to the 3.0S to designate fuel injection). The bargain end of the 6-cylinder sedan range was now the newly introduced E12 530i. The fully optioned 3.0Si was sold during the 1975 and 1976 model years.
https://en.wikipedia.org/wiki/BMW_New_Six