Hi I still have not found out what causes the noisy, gearbox bearings , It may be just that they dont put in much oil , a work aquantaince had to put at least 1.5 litres of engine oil in his 2 week old car to make the oil come up to the low level mark on the dipstick
Although if the jazz has had this problem since what,,,,,, 2002,,,, then it may be a generic engineering problem in the gearbox