One problem related to lose power steering has been reported for the 2005 Mazda RX8. The most recently reported issues are listed below.
The problem started in July 2005, when my car lose the power steering, the dealership and the distributor trying to fix the problem, but they never fixed the car, I sent to them for 11 times between July 2005 to September 2006. One of those times the car ( Mazda RX-8) lose the power steering when I drove the car at 65 mph on the highway. The steering it`s hard to move.