David A 
2007 Toyota Avalon Sedan Limited 4dr Sedan (3.5L 6cyl 5A)
I just got rid of it after 6500 miles
 I bought this car after doing a lot of research and was initially quite happy with it.  Over the 15 months that I had it, it was in the shop twice for rattles, and twice to have the oxygen sensor issue fixed, for a total of about 7 or 8 days without the car, most was related to the sensors. It had another annoying rattle in the dash when I got rid of it.   These may have all started after I had XM added to the car, but that doesn't make the rattles go away.   I traded it in for a non-Toyota vehicle after 6500 miles. 