Rear Suspension Coil Springs problems of the 2004 Volvo XC70

2004 Volvo Xc70 wagon, 89,000 miles. Front left coil spring broke while car parked in driveway (fine previous evening, obvious clunking sound when turning out of driveway in morning). Loud noise when turning steering wheel, car not drivable. Mechanic found spring badly corroded, fractured near bottom of coils. Volvo dealership's parts department informed mechanic they were "stocking plenty of springs. " this vehicle had a similar break in the left rear spring 8 weeks previously. Car is used as commuter vehicle and has never been off-road (4 whl drive sold as "cross country") or used in commercial service or for carrying heavy loads.

I had a coil spring break on the front of my 2004 Volvo Xc70. I had it replaced 3 weeks ago. Tonight, another coil spring in the rear passenger snapped (really loud!!! I can't imagine flying metal is safe). I'm just glad neither incident happened while we were driving. That makes 2 coil springs in less than a month.