500 miles on mine. Just did my first full tank fill-up. During the initial fill-up, I put regular 87 in it. I reset the fuel economy calculator, and recorded the mileage on the car in Gas Buddy. Drove it until the light came on, filled up at Costco with 93 for the next tank (28 gallons to fill after the light came on). Fuel calculator showed 11.3 Then calculated with Gas Buddy and it came to 10.6
Now, haven't even been on the highway yet with this truck. I live in the suburbs with a 7 mile commute and have the worst luck hitting nearly every one of the 11 lights between home and my commuter lot. Rarely get the truck up over 55 mph. I few short trips on a limited highway doing 60 for brief sprints. So you can imagine that 11.3 or 10.6 for that matter is not all that unexpected. Although my Charger R/T was averaging about 15 mpg on the same commute route. I was initially hoping for around 13, so 10.6 is not that great and below my expectations, but hopefully it will break in more and see if the gas mileage improves. Also, with this next tank, I used 93 octane, so we'll see if that has any effect on the mpg. From what I've read on other threads, not likely. But with Costco only be 30 cents more for 93 vs. 87, it's worth the shot since apparently the truck wants 89 in the first place (Costco doesn't sell mid-grade).
Wife thinks I'm crazy that I spent $45K ($64K MSRP) on a truck that I drive an average of less than 8k miles a year, but I look at it as money in the bank. Keep this sucker for 5 years and 40k miles and pay it off, truck should be worth at least $22k, right?
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