I'm sure there are a ton of threads on this, but the ones I have searched seem to pull more up on the 4.7. I'm test driving an '06 Limited Hemi 5.7L with 138k miles. The vehicle looks like they put it on a dyno for the last 10 years straight and went to lunch. I can't believe how clean the inside/outside is so I'd REALLY love to buy it, but seriously concerned about fuel use. I've reset the MPG info twice now on the trip computer, and I'm consistently getting 8.9 to 9.9 on the average. Is this something I just have to accept, or is there something wrong. I know it's all time 4x4 and a 5.7 Hemi, but was hoping for better than 9mpg average. Thanks!