I bought this car in May of 2015 with 55,000 miles for only $12,500 ( I now have 62,000 on the odometer). I cannot wait to drive each and every day and wow does the 3.0 automatic ever haul ass. The torque curve is steady throughout the entire ride from 0-100++. No lag, just ferocious power. My only complaint is the amber light cluster for exterior temp and mpg is partially burned out. Also, it's very hard to see objects in the rear view mirror due to some peculiar bmw dimming system. Other than that, drop the top and boogie!
Look for a well cared for car. These cars beg for you to push them. One that is taken care of will give you years of enjoyment. The car has the look that many will envy. its fun to drive and if you get a premium equipt model you will not be disappointed. Enough said.
I have driven this car on the highway at 80 mph for 1 hr each way to work for the last 4 years. I bought it with 107k miles and it now has 224 k miles and runs like new and looks almost new. The only things I have done to it besides tires and brake pads is an AC compressor, a starter, front end stabilizer bar, front left wheel bearings, valve cover gasket repair, and a radio; all normal maintenance stuff. I never take it to a BMW dealer for repair. Almost any regular mechanic can work on it and they do not charge high prices. If you get your parts through a regular parts store, they are not expensive. Also, I had rear main seal leak that I fixed with Lucas stop leak. I do not like the electronic power steering; it's a little different, but I've gotten used to it. The car has a lot of get up and go but it could use a little more power to demoralize Texas turbo diesel pickups.
I drive the car through hailstorms, snowstorms, and windstorms of the Texas Panhandle, and it performs amazingly well. It gets about 27 mpg on the highway.
Bought from dealer with 5000 miles on it. Also, had a Z3. The style of the Z4 is not as nice as the Z3 but many features of the Z4 are an improvement. Great engine. Smooth with plenty of power. I am 6'2" and , unlike many two seaters, has good room for the driver. Expensive to maintain, but I only drive it on sunny days with the top down. Just hit 20,000 miles. Red color and gets lots of compliments. I am satisfied.