I would like to get a new car with better gas mileage, so I am considering a diesel engine. The cost savings due to less fuel usage compared to most gas cars is reduced by the higher price of diesel. The higher price of diesel seems to be a somewhat recent change though. According to data from the Energy Information Agency, before Hurricane Katrina the price of diesel was on average the same as the price of gas. Since Katrina the price of diesel is on average 8.7% higher than gas. Is there a reason for this? Or is it just oil companies trying to discourage people from buying more due efficient diesel cars since they realized consumers can not quickly react to higher gas prices?
Data is available at the Energy Information Agency website: http://www.eia.gov/petroleum/gasdiesel/