Canadian Echo HB vs. US Yaris HB?

[Yaryaryaris]

The fact that the Echo HB wasn't offered to us here is just one more reason I want to move to Canada (along with working health care system, lack of plutocracy, pristine beauty, etc.) Before I bought my Yaris I was even considering buying a wrecked Echo here, then buying an Echo HB there and swapping VIN's (Hey, it worked on several festivas I've owned.

My question is, does the Echo get much better MPG's? It's lighter, correct?

Any other differences except the body moldings? I like the looks of it, less cartoon'ish compared to the Yaris (which I also love BTW)

Brenton