2008 BMW 335xi AWD powered by a 3.0L L6 engine and automatic transmission. Runs and drives with 161,877 miles. Features a power sunroof, iDrive system, and heated power seats. Exterior: Light to moderate dings and scratches but in overall decent condition. Interior: Normal wear. Mechanical: Engine has an exhaust leak. Thumping noise when driving over 5 MPH as if a driveshaft is disconnected. TPMS and Service Engine messages are displayed but unable to obtain codes. Wires are hanging underneath.