BMW Z4

The BMW Z4 is a rear-wheel drive sports car by the German automaker BMW. Replacing the Z3, first-generation production started in 2002 at BMW's Spartanburg, South Carolina plant, with both roadster and coupe forms produced. Starting with the 2009 model year, the second-generation Z4 is built at BMW's Regensburg, Germany plant as a retractable hardtop roadster.

The first-generation BMW Z4 was known as the E85 in roadster form and E86 in coupé form. It was designed by Danish BMW-designer Anders Warming, who later made the Mille Miglia Concept car with some of the same shapes as the Z4.

The most powerful car of the Z4 line-up is the Z4 M. It features a naturally aspirated, in-line six cylinder engine, used in the third generation of the BMW M3, producing 252kW (343PS; 338hp) at 7,900 rpm and 365N·m (269lb·ft) of torque at 4,900 rpm. 0-100 km/h takes 5.0 seconds, and the top speed is limited to 250km/h (155mph).

The recently-updated BMW Z4 includes the first THX-certified sound system from any German manufacturer . Available on the Z4 Coupe and Roadster, the Premium Sound System has 10 speakers, a 7-Band Graphic Equalizer, digital ten-channel audio amplifier and digital sound processor, two sub-woofers with an output of 100 Watts located behind the seats, two woofers each developing 40 Watts at the front of the car, and six midrange loudspeakers and tweeters. Total output is 430 watts. During the certification process, THX worked with BMW engineers to analyze speaker layout and positioning, and acoustic and equipment performance in the Z4 to make sure they were optimal for distributing sound throughout the vehicle.