1) Monroney sticker requires CO2 in grams per mile. It is normally not used in advertising here. It is largely a waste of space as it can be accurately caklculated from fuel economy data: *44 g of CO2 requires 12 g of C in fuel *Both diesel and gasoline are about 85% carbon w/w *Density of gasoline around 0.74 kg/L, disel 0.84 kg/L (the 2nd and 3rd assumptions can be replaced with better data if available)
2) Evidently ________________________________ From: Martin Vlietstra <[email protected]> To: U.S. Metric Association <[email protected]> Sent: Wed, April 24, 2013 4:57:56 PM Subject: [USMA:52692] RE: Oops: Imperial or Customary? Was this written by a journalist? If so 1. They probably do not know how to convert g/km to oz/mile (is that what is used in the US) 2. They are probably unaware that the UK gallon is larger than the US gallon. If on the other hand it was written by an advertising person, it might well have been convenient to “forget” about the difference between the UK and the US gallon. From:[email protected] [mailto:[email protected]] On Behalf Of John M. Steele Sent: 24 April 2013 15:48 To: U.S. Metric Association Subject: [USMA:52689] Oops: Imperial or Customary? US website "borrows" report from UK website on how green the Ford Fiesta (diesel) is: http://usdailyvoice.com/ford-fiesta-hyped-by-u-k-website-as-top-green-car-of-the-year-1958.html#comment-395 "According to official (metric system) figures, the 2013 Ford Fiesta’s emissions are now at only 87 g/km carbon dioxide. This would be for the 1.6-liter diesel variant, which is also capable of 85.6 miles per gallon in the combined cycle," The CO2 figures make it look like the mpg is proabaly Imperial, and Googling for the original UK source, they use the same figures which are unlikely to be based on the US gallon: http://www.thegreencarwebsite.co.uk/blog/index.php/2013/04/23/top-green-car-the-ford-fiesta-the-green-piece/ So he manages to change British "litre" to American "liter" but not to fix the gallons. He should have gone with L/100 km.
