the Z4 especially stands out for its better power-to-weight ratio than the Mercedes-Benz SLK, and for its more traditional soft-top convertible arrangement. The entire engine range consists of smooth, ...

With a secure power retractable hardtop, the 2009 Mercedes-Benz SLK-Class roadster offers more refinement and civility than either the BMW Z4, Honda S2000, or Porsche Boxster. It also provides a ...

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The BMW Z4 sDrive20i, the new entry point into BM roadster ... the end result being a driving experience closer to that of a Mercedes SLK than a Porsche Boxster. It’s still good fun, but it ...