general problems of the 2010 Mazda MAZDA6 - part 2

This vehicle does not track straight, even on a level road. At highway speeds (above 50 mph) it has a decided pull to the left, regardless of the lateral slope of the road. Constant clockwise pressure on the steering wheel is necessary in order to keep vehicle from drifting in a leftward direction. If driver attention is diverted for only an instant the vehicle is likely to partially intrude into the lane to the left, which on an undivided highway could be an oncoming traffic lane (hence the safety issue). I called this to the attention of my Mazda dealer's service department at least twice within the first year after purchase (January 2010). Their answer was no answer--they could not find anything wrong mechanically and there were no bulletins from Mazda on the subject. They verified the alignment and rotated the tires left to right, but neither of these solved the problem. Nearly five years later the problem still exists and seems even more pronounced than it was originally. A recent check with the dealer indicated that there is still nothing from Mazda. Possibly it is a defect that applies only to my car and not in general to that model, but I have no way of determining that at this point.