Thanks for the last post. Yes this my fifth Honda, my third Accord. The dealer is mystified at my MPG. They've received no other complaints. I haven't taken it in yet but will soon. Apparently if there was something detectable wrong the check engine light would go on. It hasn't.

I'm trying all the various options and then will go to dealer. I have an excellent relationship with them and they've been calling me to ask me if things have improved.

I am not a Honda or Hybrid basher by any means so I am looking for this to fly and I believe it will.