Morduk 
2003 BMW Z4 Convertible 2.5i 2dr Roadster (2.5L 6cyl 5M)
Dependable?
 Bought the car in November of 2003. Loved the drive of the car and was impressed with the it's lines.  Within the first 3,000 miles, had to repair both front tires due to puncture.  After 10,000 miles had to replace all 4 tires.  Inflation pressure listed by BMW was not the same as required by the tire company.  No problem with tires after proper inflation. Soft top would not function due to a leak in system.  Fixed under warranty. Problem with front suspension system.  Fixed under warranty. Few months after warranty ended, master computer system failed. Replacement value $1,300.  BMW paid half.  Currently car is in shop for front suspension system problems again.