Quote:
Originally Posted by cbibbs
Hmmm... the numbers are based on an average life-cycle per vehicle being 300,000 km (~180,000 miles). So that 15% is the same energy as driving 45,000km (~28,000 miles). I think the calculation is a bit more complex than saying a 15% improvement in carbon emissions is reason to upgrade.
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Fair enough. I was paraphrasing too literally. Double it to 30% if you like. I think the study at least pretty clearly shows that continuing to operate a vehicle of lesser efficiency just because it will run will not minimize your carbon impact and that moving from a car that gets 20mpg to a car that gets 35mpg is desirable if you have the means to do so.