"As can be seen, diesels appear to perform the best with respect to their label fuel economy, outperforming the label by 4.3%," the EPA technical support document said. Diesel was the only power source to see an increase in real-world MPG. Gasoline cars decreased by between 1.4%-1.7%, while hybrid owners saw their real-world mileage drop by over 8% compared to the current fuel economy label.

They also need to realize if they havnt already, that diesels dont see peak fuel mileage until at least 10K miles.

I didn't look into Consumer Report's figures but I would suspect this to be the explanation.

Maybe part of the explanation, but they reported 11 MPG I believe. I honestly think you could drive full throttle all day and still get better than that!

I emailed them and I think someone esle also did, and I asked about their testing procedure and they replied that they disconnected the hose from fuel tank and put it into a container with a measured amount of fuel. I emailed back that that was an invalid test as the diesel fuel system returns about 30% to as high as 70% of the fuel to the tank unused. They politely told me that their test was done properly and would stand by what they stated in the report.

I think it would look better if they admitted they made a mistake on the test. Retested, and put the true figures out there. It is impossible to get 11mpg with this jeep unless you punch a big hole in the fuel tank and allow fuel to leak out while you are driving down the road.

Yeah, even a fully loaded over the road diesel semi hauler will get around 7~8 mpg. Maybe consumer reports thought we had a six cylinder CAT underneath that plastic black JEEP bonnet.

I remember reading CR that their test was 18-19 mpg mixed highway/city. Where did you guys get 11mpg? Can someone confirm?