The BMW Z4 is an appealing proposition for a mid-range ... This article focuses on the Mercedes-Benz SLK55 AMG, based on the second-generation of the SLK. Engine 5.5-liter, naturally aspirated ...

the Supra and Z4 represent a pleasant middle ground between more modest models and more costly alternatives like the Porsche 911 and Mercedes-AMG GT63. Considering, however, that the Supra and Z4 ...

Sales of the Z4 have not met BMW's expectations, falling every year since the car's introduction in 2002 to 25,298 units this year. A coupe version of the Z4 is being planned to bolster sales ...