Toyota Sienna engine and engine cooling problems by year
293 NHTSA owner complaints name the engine and engine cooling across 16 Sienna model years. The most reported year is 2000 with 66 reports.
| Year | Engine and Engine Cooling reports | Share | Median mileage | |
|---|---|---|---|---|
| 2013 Sienna | 1 | 1% | — | |
| 2012 Sienna | 1 | 0% | — | |
| 2011 Sienna | 6 | 1% | — | |
| 2010 Sienna | 4 | 2% | — | |
| 2009 Sienna | 4 | 2% | — | |
| 2008 Sienna | 12 | 3% | 37,828 mi | |
| 2007 Sienna | 14 | 4% | 33,080 mi | |
| 2006 Sienna | 4 | 0% | — | |
| 2005 Sienna | 17 | 2% | 67,000 mi | |
| 2004 Sienna | 46 | 2% | 66,000 mi | |
| 2003 Sienna | 6 | 6% | — | |
| 2002 Sienna | 16 | 9% | 40,000 mi | |
| 2001 Sienna | 24 | 13% | 54,763 mi | |
| 2000 Sienna | 66 | 18% | 78,000 mi | |
| 1999 Sienna | 39 | 18% | 79,000 mi | |
| 1998 Sienna | 33 | 11% | — |
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.