Our spies have lifted the lid on the next-generation BMW Z4 and the big news is that instead of a fabric top, the new version of this roadster follows the footsteps of its 3-Series Convertible sibling and its Mercedes-Benz SLK rival with a retractable steel top.

As the pictures of this mildly disguised Z4 prototype suggest, the styling seems more muscular. Rumor has it, the new Z4 will likely offer a twin-turbo 3.0-liter straight six-cylinder powerplant! And we hear there's even the possibility that the Z4 will be available with diesel power for the first time!

A flagship M model could get the new 4.0-litre V8 from the M3, although a broad line-up of four-cylinder and normally aspirated six-cylinder petrol powerplants will continue to be offered.

All cars will benefit from BMW's Efficient Dynamics programme, which helps to cut CO2 emissions and boost fuel economy with features such as an engine stop/start system.

Under the skin, the platform is shared with the latest-generation 3-Series, so the rear-wheel-drive Z4 will continue to provide driver-pleasing handling.

Now that engineers have peeled back all that plastic camouflage, it is visible that the newcomer is only a few centimeters or so longer and wider than the existing Z4. And, as we all know, production will shift from South Carolina to BMW's plant at Regensburg, Germany. Sales will start late in 2009.






Photo Credit : Brenda Priddy & Company