The new model will go on sale from May 2009 in overseas markets as the latest in BMW’s long and successful roadster family, spanning 75 years.
The new BMW Z4 Roadster will feature a two-piece, retractable hard-top roof which can be raised or lowered in just 20 seconds.
It is also the first vehicle to be offered with adaptive M Suspension, which incorporates electronically controlled dampers which offer three different configurations and lower the ride height by up to 10mm.
The standard Drive Dynamic Control function is another first for the Z4, allowing the driver to alter the throttle and steering response, level of ride comfort, Dynamic Stability Control response and gear change times on dual clutch models.
A choice of three six-cylinder powerplants will power the new BMW Z4 range.
The flagship Z4 sDrive35i boasts the current International Engine of the Year-winning 3.0-litre twin-turbocharged engine, producing 228kW and 400Nm, launching from zero to 100km/h in just 5.2 seconds.
The entry-level Z4 sDrive23i uses a 2.5-litre engine which develops 152kW and 250Nm from 2,750rpm, covering zero to 100km/h in just 6.6 seconds while using just 7.1-litres per 100km.
The mid-range Z4 sDrive30i uses the same magnesium aluminium alloy engine but with a higher capacity, its 3.0-litre engine developing 192kW and 310Nm, shaving the zero to 100km/h time to just 5.8 seconds.
All three models feature a six-speed manual gearbox as standard, while the Z4 sDrive23i and the Z4 sDrive30i can also be specified with a six-speed Sport Automatic transmission featuring gear change paddles on the steering wheel.
The Z4 sDrive35i can instead be specified with the more advanced seven-speed Double Clutch Transmission, again with gear shift paddles located on the steering wheel.
BMW’s latest generation of iDrive makes its first appearance on a Z4 with the new model, together with the BMW Professional Multimedia Navigation system which features a hard disc drive capable of 12Gb of audio file storage and BMW ConnectedDrive functionality.
The unique boot construction and roof design creates a boot capacity from 180 to 310 litres, including an optional through-loading system for additional storage capability.
Local pricing and availability will be announced closer to the launch date.