Hello Could all drivers of the above mentioned vehicles briefly indicate their mileage and previously encountered problems. I am particularly interested in the higher running performance. Who has already been plagued by the problem “loss of cooling fluid through leaking connecting tube between the cylinder benches” where the engine has to be removed? I have to deal with the following problems right now (645ci BJ 2003 ; 130000KM).: -window lifter clamp protection (both sides) -noise from the switch gears (will be repaired next week) -noise at low speeds (workshop finds nothing ??) BMW has recently dropped significantly in quality. Thanks MFG