In Reply to: Re: Surely an ///M5 can't be THAT unreliable(long) posted by Neil Deshpande on September 17, 2001 at 20:18:27:
My point is that the M5 is not prone to these types of failures, it merely requires more periodic maintenance than a Lexus at a higher price.
I understand that IF something catastrophic does occur, it will be expensive. But it doesn't seem to expensive to me, in part because I'm comparing it to the ~$8000 rebuild that I want for my Camaro when it hits 200k miles or so(resleeve the block to achieve 383 cubic inches with all bore, no stroke increase).
My biggest concern would be finding a competent tech to do the work, the costs don't appear to be higher than the cost of a "performance oriented" rebuild on a late model Camaro/Corvette. A top end package for one of those is about $2500-3000 for all the parts ready to bolt on.
I am rebuilding the top-end of my M5. Cost me $1500 in parts and machine work. It might have been $800 or less on a 535i. I'm doing my own labour, but labour on a 535i would have been lower as well. The point being that if something does break you are in for a higher bill.
Should you run away from this car. NO! Some people have money for maintenance, but I have time and patience to learn and do it myself. Both are good ways to own this car. When I bought mine, I kept 20% is reserve from my budget. I need the $1500 immediately as the top end damage (spontaneous and unexplained) occured in 2 months of ownership!
The M5 is a robust automobile and you can be hard on it. But, it is not a Lexus. Those dudes build a 100 litre motor and pull 200 HP out of it. That is a formula for reliability. The M5 is a highly strung motor and will not be as reliable as that.
Whatever you do, go in with your eyes open!