1st place: Honda Clarity PHEV (36 g of CO2/km driven)
Here is the great champion of low emissions vehicles. The odd-looking plug-in hybrid sedan does better than all other vehicles equipped with a combustion engine in Canada, at least according to Natural Resources Canada and its Energuide. Which makes it a crying shame that Honda has decided to shelve the model after this year. Get it now while you can.
See also: The Honda Clarity Won't Be Back in 2022