BMW 525I vs Saturn Ion
Owner complaints, worst years and recall history side by side, from official NHTSA data. Last verified Aug 7, 2026. Raw complaint counts are not adjusted for sales volume.
BMW 525I
- Total complaints
- 374
- Avg per model year
- 31
- Recall campaigns (all years)
- 11
- Most complained year
- 2004 (84)
Top problems: Air Bags, Electrical System, Seat Belts
Saturn Ion
- Total complaints
- 4,338
- Avg per model year
- 724
- Recall campaigns (all years)
- 10
- Most complained year
- 2006 (1,235)
Top problems: Steering, Electrical System, Fuel/propulsion System
Method. Complaints are unique NHTSA reports per model year. A model that sold more units will naturally accumulate more complaints — compare the shape across years, not just the raw totals, and read the year pages for what actually fails.