This problem happened to me again last night. The car had already been driven several time during the day so it was mostly warmed up. It happened on the way to the store and the way back. The temp was about 70. This morning, the temp was also about 70 and everything was working perfectly after 1 mile of driving. I ended up averaging 65mpg over 50 miles of driving today.

I really do not believe that my problem is forced regeneration. As I stated in a previous post, this strange behavior happened to me when I had 7 bars on my SOC. With an SOC of 7 bars, you do not get forced regeneration cruising as speeds no greater than 35mph. Under these conditions, my SOC has to drop to 4 bars before I get the forced regeneration. Also, the green bars make it pretty obvious when forced regeneration is occuring. There have not been any when I have experienced my problems.