It is simply foolish for an auto manufacturing company to continue using the name of a particular vehicle model that had for itself a bad reputation. Should they plan to release an enhanced version of the same car, it would do them better if they give it a new name. This is just what BMW did when they replaced the problematic BMW Z3 with the BMW Z4. But mind you, the BMW Z4 is a whole lot different from the Z3. It is an entirely new car with an entirely new attitude.
The BMW Z4 is a 2-door rear wheel drive roadster introduced by BMW in 2003 to replace the ailing BMW Z3. Many would think of the roadster as just another generation for the BMW Z3. But with all the revisions made, including a larger size, stiffer chassis and more powerful engines, the BMW Z4 qualifies itself as a whole new vehicle, thus justifying the change in name.
What makes the BMW Z4 an entirely different car from the BMW Z3 are the various BMW Z4 parts it is equipped with and the brand new design that the roadster sports. The vehicle's style was definitely different, thanks to the "flame surfacing" design cues of BMW design chief Chris Bangle. And while the roadster's front suspension was essentially the same with the Z3, the multi-link rear suspension design was its own.
In various BMW dealerships today, the BMW Z4 is being offered in two trim levels. The BMW Z4 2.5i is equipped with a 2.5-liter 6-cylinder engine that runs with 184 hp and 175 lb-ft of torque. The upscale trim is the BMW Z4 3.0i, which comes equipped with a 3.0-liter 6-cylinder engine that registers an output of 225 hp and maximum torque of 214 lb-ft. Both engines are variants of the BMW M54 engine that is also used on many other BMW vehicles today.
An entirely new car with an entirely new attitude, the BMW Z4 is aimed to achieve what the BMW Z3 failed to.