Speedometer odometer.

Bought 325I 1988 this month. the speedometer works but the odometer does not work? Any ideas I thought the odometer worked off same as speedometer.

Funny you should ask... Ijust ran into the same problem last week. One or more of the gears that drive the odometer within the speedometer are broken. There's plenty of aftermarket suppliers online...they run about $25 per gear.