I have an '04 Impreza TS, with approx. 27,000 kms (~17,000 miles) on it. I just noticed that on the side of the driver's seat, there is a very worn spot in the fabric, a little below where my elbow would be if at my side. The spot is about 1/2" wide, 3" long. If I press on the worn spot, just below the fabric, I can feel what I think is a piece of hard plastic, probably what forms the side bolsters. At this rate, I'll have a hole in 6 months. Needless to say, I'll be discussing it with the dealership soon, though I am concerned that they'll consider it wear and tear rather than a defect. There is no other visible wear inside the car.
My last Subaru was a 1993 Impreza, which I bought new and drove until I bought the 2004. The 1993 is still in the family, being driven by my sister-in-law. The seats in the '93 are fine.
Has anyone else seen or heard of this problem?