Autoblog

AutoExpress' artists worked their magic on the next generation BMW Z4 and even though the exterior is more appealing than its predecessor, what lies beneath the evolved flame-surfacing has us aching to get behind the wheel.

As reported before, the next Z4 will feature a retractable hard top, but a cloth roof will continue to be offered on entry-level models. Motivation will come in several different flavors, beginning with naturally aspirated four- and six-cylinder powerplants. A diesel is also being considered – a first for the Z4 – and there's no doubt that the 3-series-based roadster will come packing the twin-turbocharged, 3.0-liter inline six that's proliferated throughout BMW's lineup. More importantly, rumors are beginning to swirl that the M version will be equipped with the 4.0-liter V8 currently found in the M3. If that happens, it's all but guaranteed that the twin-clutch gearbox will find a happy home in the transmission tunnel.

[Source: AutoExpress]

UPDATE: Video removed at request of spy videographer. Click here to view.

BMW is hard at work on the replacement for the current Z4 roadster, and a developmental test mule has been caught on video running laps around the vaunted Nurburgring. Despite the heavy camouflage, we can tell from the footage – which seems to follow the test mule around the Ring and into a nearby garage with conspicuous "look at me" accuracy – that the new roadster, due in 2010, will retain the current model's long nose and short rear decklid. Styling is expected to follow the theme set down by the Concept CS unveiled in Shanghai last year, but the real clincher is that the new roadster will feature a retractable hard top. That means it will be heavier than the outgoing model, but will keep up on the marketplace with hard-top competition from above (Mercedes SLK) and below (Mazda MX-5). Follow the jump to watch the video.

[Source: Motor Authority via PistonHeads]

We're seen the spy shots, so the revelation that BMW's next generation Z4 will be equipped with a folding hard top isn't much of a surprise. The mules undergoing testing show a two-piece metal unit that should be able to fold neatly into the trunk, while not infringing too heavily on luggage space.

More importantly, the new Z4 will be sporting a range of engine offerings, including an array of four- and six-cylinder mills, including the much-loved twin-turbo, 3.0-liter six found in the 135i, 335i and 535i. Additionally, AutoExpress dropped the bomb that a diesel engine will be fitted to the Z4 for the first time and that BMW might try to squeeze the 4.0-liter V8 found in the M3 into the Z4's lengthy hood.

All new Z4s will come equipped with BMW's Efficient Dynamics systems, featuring start/stop engine technology and some form of regenerative braking to boost electrical efficiency while reducing C02 emissions. The Z4's length is expected to increase by around an inch and it's due to hit dealers sometime in late 2009.

[Source: AutoExpress]