BMW has announced that they will be unveiling their all-new Z4 roadster in January of 09 at the Detroit Auto Show. BWM will be unveiling 3 different engine model Z4s first there is the the Z4 sDrive23i features a 2.5L inline-6 making 204 horses via a six-speed manual or automatic.
The Z4 sDrive30i which features a 3.0L I6 which gives a 258 horsepower and 228 lb-ft of torque and runs 62 mph in 5.8 seconds. Then there is the sDrive35i that features a twin-turbo 3.0L and 306 horsepower. 0-62 takes 5.2 seconds. More Photos after the jump