As BMW's smaller, sportier roadster, the 2013 Z4 holds a unique place in the ever-expanding BMW range.
A long hood, short rear deck, and raked windshield give the Z4 a mix of classic and modern roadster proportions. Subtle but effective surfacing along the sides lends a dynamic quality, while a not-too-aggressive front end says both "BMW" and "sporty" in an outdoor voice.
That's a fair statement. As the Z4 has grown to become equal parts modern BMW and sporty. Once a more compact, sparely-built car, the Z4 has added substance and equipment--and a degree of refinement--that was previously left out in the name of sport.
There are only three variants of the Z4, and it's all about engines and power. The sDrive 28i uses a 2.0-liter turbocharged four-cylinder engine rated at 240 horsepower and 260 pound-feet of torque. The numbers belie the four-cylinder Z4's performance, which, thanks to ample low-end torque from the turbochargers, feels like a much more powerful normally aspirated...