Saturn Ion engine and engine cooling problems by year
145 NHTSA owner complaints name the engine and engine cooling across 5 Ion model years. The most reported year is 2003 with 58 reports.
| Year | Engine and Engine Cooling reports | Share | Median mileage | |
|---|---|---|---|---|
| 2007 Ion | 9 | 1% | — | |
| 2006 Ion | 30 | 2% | 47,500 mi | |
| 2005 Ion | 15 | 3% | 46,163 mi | |
| 2004 Ion | 33 | 4% | 56,000 mi | |
| 2003 Ion | 58 | 8% | 43,995 mi |
Share is the fraction of that year’s complaints naming the engine and engine cooling. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.