Diesel is priced maybe 6% higher in the East-of-Toronto area - makes the diesel model very worthwhile. The diesel price tends not to fluctuate as much as the gas price: recently gas was $1.22 and diesel was around $1.24 (all $Can per litre)
Just got back from UK - gas there is around £1.33 per litre, almost $5 per US gallon...
Peter T