Mercury Mountaineer engine problems by year
50 NHTSA owner complaints name the engine across 10 Mountaineer model years. The most reported year is 2006 with 14 reports.
| Year | Engine reports | Share | Median mileage | |
|---|---|---|---|---|
| 2008 Mountaineer | 6 | 6% | — | |
| 2007 Mountaineer | 5 | 6% | — | |
| 2006 Mountaineer | 14 | 12% | 75,000 mi | |
| 2005 Mountaineer | 7 | 9% | — | |
| 2004 Mountaineer | 8 | 4% | — | |
| 2003 Mountaineer | 1 | 1% | — | |
| 2002 Mountaineer | 2 | 1% | — | |
| 2001 Mountaineer | 1 | 5% | — | |
| 2000 Mountaineer | 4 | 3% | — | |
| 1998 Mountaineer | 2 | 1% | — |
Share is the fraction of that year’s complaints naming the engine. Raw counts are not adjusted for sales volume — years that sold more units naturally accumulate more reports.