I couldn't find a figure, but I did find
a calculation based on an engine's mpg.
Divide 6760 by x where x is your mpg (imperial) =
g/kmIn the BIS sales catalog, Fiat compares the BIS engine against the previous aircooled engine. Fiat claims the aircooled engine did:
Urban - 41.5mpg
Motorway - 52.3mpg
Combined - 46.9mpg
So that would be...
Urban = 162.89 g/km
Motorway = 129.25 g/km
Combined = 144.13 g/km
Ofcourse, this doesn't prove on paper to the Irish authorities the car's emissions, sorry!
Perhaps you could ask a garage to run a test of some sort and write down the result on headed paper.