For 2012, the BMW Z4 has a new exhibit: the sDrive28i, powered by a new turbocharged 2.0-litre four-cylinder engine. It replaces the sDrive30i, which misused a naturally-aspirated 3.0-litre inline six-cylinder engine.

The Z4 roll consists of the sDrive28i, with 2.0-litre four-cylinder and twin-scroll turbocharger; the sDrive35i, with twin-turbocharged 3.0-litre inline six-cylinder; and as the
 
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