35 mph and under........sucks but should be expected for a 360hp v8

35-65 mph....the cylinder deactivation lets the R/T achieve averages as high as 25 mpg

65-85 mph.....you lose 4 or more mpg and average 20 mpg (advertised 23 does not happen past 65 mph)


1,400 miles driven, 80% cruise control highway, 5% light to light city, 15% stop and go freeway rush hour type traffic in Houston

18.8 mpg average on computer. BUT doing the math by hand and dividing miles by gallons I calculate around 18.....

Disclaimer: I have really been "enjoying" the Hemi and sound of the exhaust (you won't want this R/T when I trade it in lol.......

 

Funny, I get my best gas mileage doing 80MPH in 6th. Sitting at 2K RPMs just feels good in the HEMI and I get 20mpg doing it.

Note: I live in Florida and the largest hill in Florida is Space Mountain at Disney. lol

 

Yours isn't broken in yet. It gets better with miles still great mileage for basically the weight of a full size pickup.

 

You guys get so much better gas mileage then we do. Our last 4-5 tanks have been less then 14mpg here in Il. We are already at 7500miles since we bought it in Sept too.

 

I think the 8 speed helps out in the low range as much as the higher. It gets up into the higher gears pretty quick in stop and go traffic quick really lowers the rpm's.

 

Alot has to do with temperatures and gas blends
STEVE

 

I've run nothing but 89 octane through it so far. I hate spending the bucks when that tempting 87 octane button is right next to it for less......

 

Down south there are not winter blends of gas, in northern climates there is more oxygenation to the gas during colder months which lowers gas mileage ratings noticeably.
Cars also run themselves a bit richer on warm up in colder areas, hence using more fuel as well
STEVE

 

Got the same on my rt too. Almost exactly the same results. Happy with it so far.

 

8,000 miles just over 3 months:
(Yes, I drive a lot for work)

18 Mpg average over 8,000 miles checked by hand

19.2 Mpg average over 8,000 on trip computer