A USA spec Hyundai is around 25MPG (combined) https://www.hyundaiusa.com/tucson/specifications.aspx 2.0 FWD Petrol
This correlates to the Australian 200gCO2/km http://www.hyundai.com.au/vehicles/ix35/specifications-and-range 2.0 FWD Petrol
in UK, diesel Hyundai is from 135gCO2/km http://www.hyundai.co.uk/new-cars/ix35#efficiency 1.7 CRDi Diesel Blue Drive 2WD Manual
Hyundai ix35 is the same as Hyundai Tucson (marketing - different names for different regions, some prefer names, some prefers code numbers)
Asutralian ADR81/02 seems same as UK test https://www.greenvehicleguide.gov.au/GVGPublicUI/Information.aspx?type=FuelConsumptionLabel
if 200gCO/km is about 25MPG
then
135gCO2/km is about 37MPG (200/135 x 25)
so if a Hydrogen Tucson vehicle is rated as equivalent to 37MPG, then it is achieving the same emissions as what a diesel Tucson achieves today.
http://www.ucsusa.org/sites/default/files/attach/2014/10/How-Clean-Are-Hydrogen-Fuel-Cells-Fact-Sheet.pdf
UCS figures indicate that the fossil fuel H2 gives the Hydrogen Hyundai 38MPGghg
just like the Mercedes Hydrogen B Class, Hyundai's frugal diesel has comparable emissions as its Hydrogen equivalent. comparing the like vs like, the same vehicle. http://www.mynissanleaf.com/viewtopic.php?f=7&t=19799
This correlates to the Australian 200gCO2/km http://www.hyundai.com.au/vehicles/ix35/specifications-and-range 2.0 FWD Petrol
in UK, diesel Hyundai is from 135gCO2/km http://www.hyundai.co.uk/new-cars/ix35#efficiency 1.7 CRDi Diesel Blue Drive 2WD Manual
Hyundai ix35 is the same as Hyundai Tucson (marketing - different names for different regions, some prefer names, some prefers code numbers)
Asutralian ADR81/02 seems same as UK test https://www.greenvehicleguide.gov.au/GVGPublicUI/Information.aspx?type=FuelConsumptionLabel
if 200gCO/km is about 25MPG
then
135gCO2/km is about 37MPG (200/135 x 25)
so if a Hydrogen Tucson vehicle is rated as equivalent to 37MPG, then it is achieving the same emissions as what a diesel Tucson achieves today.
http://www.ucsusa.org/sites/default/files/attach/2014/10/How-Clean-Are-Hydrogen-Fuel-Cells-Fact-Sheet.pdf
UCS figures indicate that the fossil fuel H2 gives the Hydrogen Hyundai 38MPGghg
just like the Mercedes Hydrogen B Class, Hyundai's frugal diesel has comparable emissions as its Hydrogen equivalent. comparing the like vs like, the same vehicle. http://www.mynissanleaf.com/viewtopic.php?f=7&t=19799