You can see Gas Prices in the Greater Toronto Area here:Generally speaking, Webmaster, ALL four-by-fours are diesel over here, except for a few that are driven by regular competitive off-roaders who need the rapid situational-response that a petrol-engined V8 provides.
The reason has got to be the petrol (gas) prices. Even though diesel fuel is slightly more expensive in Britain than petrol (No, I can't work out how they justify that one either) the price of both makes for diesel being by far the most preferred for big-engined vehicles.
Although fuel prices are dropping slightly, a gallon of fuel is still around six to seven English pounds; that's around fourteen US dollars a gallon. I really should know the Canadian equivalent, having had a Canadian Mum, but I'm ashamed to say, I don't!