Common problems with the Toyota Sienna include the dashboard cracking and power issues, both loss of power after slowing down and acceleration without touching the pedal. Specific issues vary based on the model year.
Dashboard cracking was most common in the 2004 Sienna. Loss of power after slowing down occurred most often with the 2007 Sienna, and it was reported at 36,379 miles on average. It cost an average of $3,000 to fix. Unintended acceleration was most common in the 2004 Sienna and was reported at an average of 71,625 miles. It cost $8,550 to fix on average. A common complaint with the 2000 Sienna was transmission failure at an average of 85,000 miles, with an average repair cost of $3,441.
Recalls were issued for the 2010 to 2013 model years due to the front air bag sensor and control module. Other recalls include structure issues for the 2003 Sienna, fuel system and gas tank issues for the 2004 Sienna and power train transmission issues for the 2005 Sienna.
The 2004 Sienna received multiple awards including the "Car and Driver" Five Best Trucks Van Award. It was also rated a double best pick by the Insurance Institute for Highway Safety. The 2011 Sienna received the IIHS' Top Safety Pick Award.