One problem related to engine exhaust system has been reported for the 2006 Volvo S40. The most recently reported issues are listed below.
When I signed a purchase order on 5/10/08, the odometer disclosure statement was 6225 miles. Jackson Volvo service at hilo did not give me the copy of odometer disclosure statement. It was delivered on 5/12/2008. Then the odometer disclosure statement showed 106,225 miles. The a/c also became very polluted.