Hi all, Whilst I had my Z3 I trawled the forums for potential issues with a view to carrying out some worthwhile preventative maintenance. The most widely documented issue seemed to be premature failure of the plastic impeller water pump. So as it seemed to be a no brainer I replaced it and slept easier. My question is what about the Z4? Is there there one (or more) really obvious must do things to avoid a future catastrophe? I presume the water pump issue was resolved by the time the Z4 went into production? My car is a 3.0 auto first reg July 2003. All help appreciated, Deano.