One problem related to transmission fluid leaking has been reported for the 2003 Mazda B2300. The most recently reported issues are listed below.
Sudden and unexpected loss of clutch fluid rendering vehicle inoperable (loss of control to go forward and get out of the way) due to an inability to shift gears. Leak at clutch slave cylinder is suspect. Found myself to be a "sitting duck" at a traffic intersection although fortunately, no accident occurred.