It's few weeks and just 3 short trips with my 2003 Z4 E85 Sterling grau and I definitely love it! Such a nice car and so much fun riding it! I'm more and more impressed and happy I have it in garage.
I'm looking for info about this car for many months and found this website very useful and the community is very active and with great knowledge of the car. So as I have got the car now, I just wanted to thank you all and start to discuss the issues I'm going to address no my car.
So let me shortly introduce myself: my name is Kamil and I live in Czechia. Working in IT and love to put my hands on the car (if my schedule allows me) the same as driving it. So want to fix and get in OEM state as many as possible.
As I said, the car has born in September 2003 (yeah, round birthday is coming
) in sterling grey/grau with 3.0 V6 in manial and is just above 200,000 km (125,000 miles?).The exterior is quite nice, but there was some works done in the front bumper and probably also on the boot - unfortunately I don't know about last 2 year as the car was not maintained in BMW dealership.
Interior is in black leather w/o navi in good shape, but the drivers seat has leather in the side guide damaged.
From the other issues I know about:
- rust coming on the left door,
- fuel cap not locking and missing security rope (fixed already, was missing the sleeve of the lock pin and bolt and on top was wrongly assembled (strange who did this and why),
- right side mirror not adjusting (motor doesn't run even if I give it a hand), also the glass is with some spots on the reflex layer,
- the drivers seat has nearly hole in the side of it from getting in and out,
- some missing segments in the LCD showing outside temp,
- boot is very heavy (struts was week and already replaces, some minor issue remains)
- some ugly paint on the reinforcement pipes in the motor bay, also the plate holding front bumper need some paint,
- brakes needs also some attention, I want paint the front calipers and not active parts of the disks and the rear brakes will probably need complete replacement.
Uh, that's it... sorry for the long post, just wanted to give you some idea about the car and my expectations and work needs to be done.
Thank you very much for this place!
But at the end I'm happy I ended in sterling grey for a lot of reasons. It's not only a lower attention which is still high for my type of person 
(Faster than the above....much faster