Towing uhual trailer across country...

[Woodsman]

850 lbs + 300 lbs + contents in car + long trip + mountains = bad idea.
The Yaris in Canada is rated to tow 800 lbs.

Have you considered boxing & shipping your belongings. Most likely your cheapest solution.

[jambo101]

Originally Posted by Woodsman

850 lbs + 300 lbs + contents in car + long trip + mountains = bad idea.
The Yaris in Canada is rated to tow 800 lbs.

.

I agree, gonna put a lot of strain on a drive-train not designed for that kind of hauling,might cost you a clutch if its a standard particularly when hauling the over-sized load over the Rockies, if its an automatic could cost you the whole tranny.
I'd reconsider what you really need and if it cant fit in the back seat or the trunk i'd get rid of it.