"This is my 5th BMW, all have been great cars. This one is my favorite. BMW made a winner here. Amazing performance but still docile in town. The torque range of the engine is wonderful, pull away in any gear with ease or drop down and leave the traffic behind. Handling is next to none and brakes that are out of this world. You can drive it as a lazy man or a wild man, it just comes back for more. I have owned the Porsche Boxster S as well, very good car as well, but I love the Z4M over it."
"If you like the styling and the firm ride, this is a top-quality roadster that holds its own anywhere. About 23 MPG from the beefy engine, great handling, good trunk space--a highly civilized sports car."
"I bought a used 2003 2.5i version of this car and even though it is the smallest engine available in the US I still love it! Its reliability has been good (with the exception of the convertible top needing replacing), I've gotten looks and comments from people that have been mostly good, and have been on numerous road trips with it. There are a few nits about the car though. The run-flat tires combined with a rock hard suspension mean that you'll be thrashed about on anything but smooth highways (which in America are rare to come by, least of all in my city, Seattle). The electronic steering can seem sluggish on bumpy roads and the car's true acceleration potential is hindered when not in sport mode. Lastly, it's not the most practical but if you're buying a two seater convertible, you're not aiming for practicality. If you can get past these nits, then you'll love this car. I plan on keeping mine forever."
"I just got my z4 and i am thrilled each time i drive it. i just step into a different world whenever i drive -- the top down, the sound of the wind and the engine is a very exhilarating experience. sticks to the road on turns, very easy to go fast, the top goes down in less than 10 secs... although some people find this takes too long, for me it's just fine. all my colleagues at work wanted to get one when they saw it. i got a loaded z4 (premium and sports package, leather and heated seats, xenon headlights, etc.) and i feel like a princess in it :) the heated seats are also a plus, the auto dimming mirrors and automatic headlights. i am also impressed with the technology of the run flat tires, and the dynamic stability control and dynamic traction control where the car modulates engine power and applies brakes individually to tires to help keep the vehicle under control when it senses under or over steering... this car really knows how to treat you right!"