The BMW M4 seems destined to forever be the second-most-exciting model in the 4-series clan, having previously played second fiddle to the water-injected M4 GTS and now finding its position at the top of the range usurped by the fractionally faster, fractionally firmer M4 CS. While the regular M4 remains a hugely desirable performance car, its suitors will be forever gazing over its shoulder and trying to flirt with its sexier sister. READ MORE ??
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