Overall, I would rate this car as having exceptional value for its age. Bought a year and a half ago, at 125000+ miles she is still going strong mechanically and electronically, and still looks like she just left the dealership. I have had offers to trade/sell for a new Volvo because the demand for used S70s is high (great car to pass to the kids). The only issues have been the oil system, which needed repair once one month after purchase because of insufficient oil flow to the cams, and replacement of the coolant resivoir. Repairs were due to normal wear/age, and not derived from poor build quality. Quick and smooth performance, intuitive interior layout, and timeless design.
Smooth and suprisingly powerful performance and shifting (auto), great stereo, comfortable seats, dual climate control fast and effective, large trunk with folding rear seats, trac control, and the design ages extremely well--still makes an impression. Take care of it, and will take care of you.
Fuel mileage could/should be better for a 5 cylinder (20/23 isn't bad, but...), lumbar support on front seats is not well designed, not enough wiper function, dash tends to rattle a little without repairs