I read the following on another web site:
From the CBSA website: (http://www.cbsa-asfc.gc.ca/media/fac...s/074-eng.html)
If you are a Canadian resident, be aware that Canadian legislation places very strict guidelines on temporary importations of vehicles, such as rental cars, into Canada. If you rent a vehicle in the United States and drive to Vancouver, you may be told that your vehicle is inadmissible and turned away at the Canadian border.
There is also a CBSA document which makes it clear that Canadian residents may not drive US rental vehicles into Canada except under special circumstances: http://www.cbsa-asfc.gc.ca/publicati...d2-4-1-eng.pdf