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Subscribe to this threadBMW 520d beats Prius in gas mileage
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Duncan @ Mar 23rd 2008 1:19PM
Ultra Low Sulfer Diesel fuel should, theoretically, cost about 5% more than gasoline to produce from the same crude. The cost differences are due to a number of things including taxes, demand, and refinery capacity. Diesel contains about 10% more energy by volume than gas and therefore produces about 10% more CO2 by volume when burned.
If you're comparing diesel vs gas hybrids, you need to take into account the additional energy-per-liter/gallon, and you need to look at CO2 emissions.
The fact that the Prius had significantly better CO2 emissions is an important stat.
The end result is: they're both great cars, they have different advantages, and they serve different purposes.