All-new 2010 BMW Z4 sDrive revealed

The redesigned 2010 BMW Z4 has been officially revealed. Looking much better than before, it also packs three engine choices, new technology and a folding hard-top.

At launch, three inline-six engines will be offered, and the Z4 will use a new naming strategy.

The base model is the Z4 sDrive23i which, oddly enough, comes with a 2.5L engine. With 204 hp, it can do the 0-62 mph sprint in 6.6 seconds, while top speed is 151 mph.

The mid-level Z4 sDrive30i is powered by a 3.0L engine that puts out 254 hp. The 0-62 mph time is slashed to 5.8 seconds, while top speed is electronically limited to 155 mph. Despite more power, the sDrive30i apparently also has identical fuel economy to the sDrive23i model.

The top-of-the range Z4 sDrive35i packs a twin-turbo direct injection 3.0L engine, with 302 hp. The 0-62 mph run takes 5.2 seconds with a 6-speed manual, and that can be reduced by a further 0.1 seconds if the optional 7-speed Double Clutch Transmission (DCT) is chosen. The DCT lowers fuel consumption slightly. Both cars top out at 155 mph.

Indeed, only the sDrive35i is offered with the optional dual-clutch automanual transmission, with a conventional 6-speed automatic optional on the other models. A 6-speed manual is standard across the range.

Also optional is Adaptive M Suspension (AMS), which features electronically-controlled dampers with three settings, accessed via a switch on the center console. BMW says that the firmest setting, where the ride height is also dropped an inch, is similar in comfort to the standard suspension of the outgoing Z4.

A new Drive Dynamic Control function that allows the driver to alter steering and throttle calibrations, the AMS, level of traction control and gearchange strategy on the automatic models by the touch of a button.

There have been modest increases in length and width. The new two-piece roof also offers extra headroom and takes only 20 seconds to operate, though it reduces cargo space. There is some additional storage space behind the seats and BMW will offer buyers the option of a through-loading system.

The new Z4 will hit showrooms by May 2009.

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