PROVIDENCE, RHODE ISLAND -- My 2006 S40 was OK until about 2009 when we started having water appear in the passenger side footwell when it rained. I was told by the dealer that it was a known problem with a service bulletin available from Volvo that said it was a design problem, all Volvos since 2001 that have a sunroof have the same issue. I was told that since the car was no longer on warranty, too bad, it was not covered. They wanted $1700 to fix it and told me other than having water in the footwell, it would not cause other problems.
In December, 2011, the car completely died. The problem was that one of the computers (under the dash on the passenger side) was ruined due to being wet. It cost me over $1000 to get the computer replaced and the repairman said that the other computers (in the same location) were also showing signs of corrosion, etc. due to the water. He also said that, in his opinion, the car was not trustworthy. It could be OK for years or die at any time.
In summary, a known design flaw that showed up after the warranty period caused my Volvo to be a car I cannot trust and therefore I have decided that I will sell the car. Never buy another Volvo and tell everyone I cannot too, buy Volvos.