I've been in my 06 for 10 days now. My first tank ended at 40.5 mpg. I'm around 43 on the second tank, but I have been driving EXTRA cautiously. I've now done two drives to San Diego (100 miles each way)... and a few morning commutes to my office (21 miles in moderate traffic... which has been light recently, thanks to spring break). I've been staying in the 65
mph range... never faster than 70. Very difficult for me, as I used to own the fast lane in my SUV. Now people pass me like I'm standing still.
Overall, I've been a little disappointed. As cautiously as I've been driving, I thought I'd get high 40's. I'll be patient, though!!!
I live in Anaheim Hills... with an emphasis on "hills". I find the hills really kill mileage. With 100 miles accumulated on trip meter A, and 43.0 mpg showing... the one hill up to my place sucked it down to 41.9. Over 1 mpg drop in one stinkin' mile of hill. Of course, I end up going DOWN that hill, too, but I don't get the full 1.1 MPG back.... maybe .4 or .5 is all. Oh well.
I love everything else about my HCH... especially the NAV system!