I have just acquired a 2001 M3. The car has 29,000 miles on it. I have had to replace the battery. I presume the car was stored winters without the use of a battery charger. No big deal.
I have two, more serious, questions regarding the car. There seems to be quite a bit of gear noise. It surprises me. I would have expected an expensive BMW to be quieter. Even the throwout bearing is audible when using the clutch. Do others who own this model consider that to be normal?
My other question has to do with the clutch. The takeup seems abrupt. I had to drive the car several miles before first to second gear shifts got smooth. Driving the car takes a fair amount of effort, especially in traffic. I also own a Honda S2000. That car practically drives itself. Everything feels light and smooth compared to the BMW.
Neither problem is significant enough to justify replacing parts at this point. I have given thought, however, to having the transmission fluid changed to see if it will make things quieter. I would replace the clutch as well if I thought a new one would make the car easier to drive. I'm not a bit anxious to spend money on a transmission but I suppose I'd consider it at some time in the future if this car has been abused and the unit is worn excessively.
The car is certainly peppy and it's fun to drive out on the open road.