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 ...
Compare the distinct exhaust sound of the BMW Z4M E85 with a 3.2L naturally aspirated engine and the BMW Z4 35i E89 with a 3.0L turbocharged engine. This video features revs, throttle blips, and ...
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