I just picked up my pampered 2006 R500 with 54K miles after the dealer fixed the front passenger airmatic suspension and driver side mirror.
Here is the breakdown of the invoice:
Passenger front Hyprophneumat (Airmatic Strut): $1144
Valve Block: $246
Side Mirror assembly: $466
Total: $3000 :rocketwhore:
Luckily, I have an extended warranty and my our of pocket is only my deductible of $200. :beerchugr:
Anyway, I am sure the other 3 Airmatic Struts are all going to fail soon and they will probably cost somewhere about $7000. My advice, GET A GOOD EXTENDED WARRANTY if you want to keep the car for a while after factory warranty ends. I was in total price shock on those items especially my car is very well maintained.