womps wrote:
auto guide.com released an article today saying they believe the new Powerstroke will exceed 30 mpg because when an automobile company announces their estimate of fuel economy before the EPA does that they will be conservative. Autoguide said you might see 32 or 33 mpg. That sounds very optimistic.
Not really. Diesel engines generally get higher than EPA estimates in the real world depending on how much highway driving you do. The way the EPA certification tests are designed, gas engine generally post higher EPA numbers than the real world mileage while diesels will general post lower EPA numbers than what you get in the real world.
