Where is the noise detectable on item 4 ? Behind front wheels? How loud? Can you elaborate more? Is it still doing it ?
Quote:
Originally Posted by MPNeverDie
My full stock M6 is 8 years old and 46,000 miles on the odometer. I drive 85% highway around 3k to 3.5k rpm at 7th gear (so you can image the speed). Oil consumption is quiet low which is about 3-4k miles per litter.
1. Rear window shade stopped working around 35,000 miles (ignored it)
2. AC hose replaced around 38,000 miles (Dealer asked $500 to diagnosis and replace. This is probably because I did not use AC very often)
3. Upper Pan Seal replaced around 42,000 miles (Dealer asked $5K to replace)
4. I got the rattling noise from transmission at idling around 38,000 miles. (It should be the part 28102284678 as other discussed before. I decide just to ignore it.)
5. Driver side soft close door stopped working around 43,000 miles (Dealer asked about $1.2k)
6. Crank case ventilation hose leak around 44,000 miles (Dealer asked about $600 to replace)
7. Dealer stated that Mass Airflow Sensor was covered with engine oil and need to replace due to Crank case ventilation hose leak around 44,000 miles (Dealer asked about $1.3k to replace, but this could be cleaned for reuse)
8. My windows start not roll up completely now at 46,000 miles. (this is probably only happen on M6s because they have borderless window. I had a f10 535i which never had this problem)
9. Noticed my Charge Pipe is leaking slightly because the clamp is loosing (I think this should a Cheap and easy fix)
Basically, the repair cost on engine for my car over 8 years with 45,000 miles is about $5.6k, which is kind acceptable for an $130k car.
I would say the engine is pretty reliable as long as don't rev it hard during warm up. Maybe stop and go traffic will also kill the engine. Other than engine, every show off features are like to fail before 50,000 miles, I would rather have a car without soft close door or window shade.
Also, I predict that the rod bushings would fail before 70,000 miles, since the car is pretty heavy plus bumpy California roads.
Overall, M5 and M6 are very solid cars. My only compliant is that I wish if the stock can sounds like the one on F90 M5.
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