Bimmer 2000 323i clutches last 6 years and 156,451 miles. I know this because mine finally gave up its life at this great distance. The problem it uncovered however is now as costly as the clutch replacement. My transmission is currently not synching my second gear. My car dude, Max, tells me; he's German that I will need a new transmission. The clutch replacement cost only a small kings ransom of $2,264.00 and the replacement tranny is projected at $2,700.00. Currently with the exception of no second gear when down shifting at speed I do not feel the loss. The effect does not appear when starting from a standing stop and shifting from first to second. The gears grind when going into second at speed. I've asked around and I was told to check my gear fluid reservoir for metal shavings and the possibility that there is no gear lube in the reservoir. Any and all opinions are welcome. I've spoken to my ex-car dude in the area I used to live in and he says he can do the replacement tranny for approximately $1,000, which would be a significant savings. Bottom-line, how do I really know I need a new tranny and what should a replacement tranny cost? Happy Motoring...[driving2]