I have two 328is, an N52 e91 (2009) and an N51 e90 (2011), both automatics. In mixed driving they both return 22mpg driven normally and 23 if you drive like an old person. On the freeway, going 70mph, the wagon would hit high 29s and the sedan will do 30mpg. That is it. My 350hp N55 335 will do better than that. Considering the performance level, the 328i economy is pretty dismal.
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