Just a note on Prius fuel consumption numbers. I'm getting around 5.1 on the last three tankfuls on my '07 which has included minus 15 weather with snow, 400 series highway driving and city driving. About 10% to 15% better than the Echo.
However, given the fuel tank bladder issue, that makes it hard to really fill the tank consistently, I can't totally vouch for the accuracy of the fuel computer. Ditto I'm sure for all the vehicles in this test given the relatively short distances involved.
My area is fairly hilly and I have Nokian WR2s on and don't hold up traffic. Acceleration from a dead stop is less than burnout rate however.
One thing the reviewers of the comparo failed to mention is how quiet the Prius is, ICE on or off. This is the most important component of any luxury vehicle in my view. I'm sure the other vehicles are quiet as well (as are probably all midsized new cars).
If they can match the incredibly slick technology of the Prius then the automotive world is indeed making progress.
Cheers and Happy New Year,
John M.