BMW 2.5CS

The last version of the E9 to be introduced was the 2.5CS in 1974. This was a response to the 1973 oil crisis

1973 oil crisis

The 1973 oil crisis started in October 1973, when the members of Organization of Arab Petroleum Exporting Countries or the OAPEC proclaimed an oil embargo. This was "in response to the U.S. decision to re-supply the Israeli military" during the Yom Kippur war. It lasted until March 1974. With the...

, such that the buyer could choose the smaller, more economical engine. The engine, from the 2500 sedan, displaced 2494 cc and produced 150 hp at 6000 revolutions per minute. Only 874 were made until the end of E9 production in 1975, and none were exported to the United States.'

BMW E9 CS Production Numbers

Model/Year	1968	1969	1970	1971	1972	1973	1974	1975	Total
2800 CS	138	2534	3335	276					6283
2800 CSA		787	1089	73					1949
3.0 CS				1974	1172	779	267	263	4455
3.0 CSA				520	1215	1169	355	408	3667
3.0 CSi				1061	2999	2741	579	555	7935
3.0 CSiA					2				2
3.0 CSi RHD						66	128	13	207
3.0 CSiA RHD						69	139	7	215
3.0 CSL				169	252	287	40	17	765
3.0 CSL RHD					349	151			500
2.5 CS							272	328	600
2.5 CSA							101	143	244
2800 CS USA		43	415	183					641
2800 CSA USA		36	403	87					526
3.0 CS USA				132	411	450	375		1368
3.0 CSA USA				60	377	314	438		1189
Total E9 Production	138	3400	5242	4535	6777	6026	2694	1734	30,546