Jeeps and great gas mileage? He never saw those words in the same sentence. Most people bought a 4 wheel drive jeep, to use on or off the road. But the mileage landscape may be changing.
According to the website fueleconomy.gov, the official EPA window sticker fuel economy for a 1993 8-cylinder Jeep Grand Cherokee, which was the first year of the Grand Cherokee, was 14 mpg city and 18 mpg. highway. In 2003, an 8-cylinder Grand Cherokee had an official EPA window label fuel economy of 15 mpg in the city and 20 on the highway. Not a huge increase in mileage from the city.
2010 saw a slight drop in the EPA 5.7L 8-cylinder sticker at 13 mpg city and 19 mpg highway.
For 2011, the 5.7L engine stayed the same at 13 and 19 mpg. The 3.6L 6-cylinder broke the 20 mpg barrier with 16 mpg in the city and 22 mpg on the highway. So with a little less power, you can save money on fuel costs with the 6-cylinder. That savings equates to about $ 453 a year according to EPA estimates.
What about the 3.6L with E85? EPA estimates are 12 mpg in the city and 16 on the highway. Annual fuel costs are about $ 325 more than 3.6L using regular gasoline. So why use E85? It’s called a carbon footprint.
A carbon footprint is the measurement of tons per year of CO2 emissions. It is an estimate of the fuel use of the complete fuel cycle, from production and refining to distribution and end use.
The 5.7L engine has a Carbon Footprint of 12.4. The 3.6L with regular gas is 10.4, while the 3.6L in E85 comes in at 7.6.
So the picture of mileage is changing. But for better or for worse remains to be seen.