my 04 jeep grand cherokee 4.7 v8 gets 14-16mpg city and around 18-20mpg highway @ 70mph. my moms 04 grand cherokee 4.0 l6 gets around 15-17mpg city and 20-23mpg highway. the 4.0 is by far the best engine ever. nothing out there looks like a jeep if you want something that looks like a jeep your going to have to get a jeep.