According to a Twitter update from the folks at Automobile, BMW will be ditching the naturally aspirated 3.0-liter inline-six in the base Z4 roadster in favor of a turbocharged four-cylinder ...
Which Z4 sounds better? In this exhaust sound battle, the legendary BMW Z4M (E85) with its high-revving 3.2L naturally aspirated S54 engine goes head-to-head with the BMW Z4 35i (E89), powered by a ...
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