Compared with the original model, the second-generation BMW Z4 Roadster became a slightly different animal as the German car maker looked to make the two-seater more appealing to buyers considering a Mercedes-Benz SLC or Porsche 718 Boxster. The biggest difference compared with the previous Z4 was the introduction of a metal folding roof which meant it was much quieter at motorway speeds. This also improved security, while the cabin had plenty of space, especially in terms of head room. Perhaps the most important improvement came in terms of refinement and ride comfort, though: the second-generation Z4 was a coupe convertible that was easy to live with everyday. The folding roof was neatly integrated into the car's styling, making the Z4 an attractive looking car whether its lid is up or down. With the roof up, it felt very much like a fixed-head coupé to sit in and there was a reasonable amount of boot space. As you'd expect, however, the boot does shrink dramatically when the roof is lowered. Standard across the range is a BMW Z4 safety system called Dynamic Stability Control+ (or DSC+ for short) which combines several features such as traction control, corner brake control and brake fade compensation to help keep the car on the road and stable. The body shell is extremely stiff and there are head/thorax airbags integrated in the side of the seat backrests which inflate in the event of a collision from the side. ABS/EBD, Air filter, Ambient interior lighting, Anthracite Velour floor mats, Auxiliary socket for external device, BMW professional radio/CD/MP3, Body coloured bumpers, Body coloured door mirrors, Brake force display, Chrome kidney grille with black vertical, Cornering brake control (CBC), Crash Sensor - activates hazard/interior, DAB Digital radio, Daytime running lights, Driver/Passenger airbags (Impact depende, Dual zone automatic air conditioning, Dynamic Drive, Dynamic stability control, Dynamic Traction Control - DTC, Electric adjustable heated door mirrors, Electric front/rear windows with one tou, Electronic parking brake, Follow me home headlights, Front centre armrest, Front curta