The new BMW Z4 officially unveiled

After last week we saw two leaked photos of the new BMW Z4, this weekend, the German carmaker officially unveiled their new sports car. When it will go on sale, the new Z4 will be available with three engines, an entry level 2.5 liter developing 204hp (152 kW) and 250Nm (184 lb-ft) of torque, a 3.0 liter (258hp (192 kW) 3-liter engine with 210Nm (228 lb-ft) of torque) and a top of the line 3.0-litre twin-turbocharged unit that delivers 306hp (228 kW) and 400Nm (295 lb-ft) of torque and takes the Z4 from 0 to 100 km/h (62 mph) in 5.2 seconds. A premiere for the Z Series is the use of a new retractable hard-top, which opens and closes in 20 seconds. Of course, this means that the car is heavier, but to deal with that, BMW has fitted the Z4 with an Adaptive M Suspension system (ride height can be raised/lowered by 10 mm with three configurations available), plus the Drive Dynamic Control function, available for the first time on the Z4. The new BMW Z4 will make its world debut at next month's Detroit Motor Show, when BMW will also probably announced the dates when the car will go on sale. Check out more photos and a video after the jump. Photo Gallery: The new BMW Z4