Like it or not, after a long absence, BMW may bring four-cylinder engines back to the U.S. to help it meet stricter fuel economy standards. According to Bloomberg, rather than make an even stronger case for clean diesel engines, (which Americans just can’t seem to embrace), BMW is seriously contemplating a return to smaller engines.
About half of BMW’s models worldwide have diesel engines: the 1 Series, 3 Series, X3 compact SUV, and the entry level version of the midsize 5 Series sedan.
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