MPG 6.4L

[Albert525]

Thoughts on laramie 4x4 410 rear end mpg?
city and highway (70 mph not 80)

Thanks.

Im assuming 12/20 ?

 

[dexter]

towing 10
city 12
highway 16

if you have to ask, you can't afford it.

Get a Prius.

 

[mtnrider]

11-12 is about right for city. 20 on the highway, no way. More like ~16 on a good day

 

[dhay13]

I have a 2018 with 4.10's but have the 6 speed auto. I get about 12 with a mix of in town and rural driving (about 30-40 MPH). Highway I can get about 16.5-17. My fuelly is linked below. These are all hand calculated. I would think you might get slightly better than me with the 8 speed

 

[mtnrider]

^ I'm not sure you will see much better highway mpg with the 8 speed over the 6 speed? The final ratio is still pretty close so cruising in 6th(old trans) or 8th (the new trans) will be pretty close to the same.
I think the bigger difference will be in the towing and around town (getting the truck moving) performance between the 6 and 8 speed. The 8 has a lower 1st gear and closer ratio between 1 and 5. Once you get to 6, 7, 8 it pretty close to the same ratio as 4, 5, 6 on the old transmission so highway cruising will be about the same I think.

.

 

[NH RAM]

My 2019 with 6.4 and 3.73's just rolled 6,000 miles. I did a trip from NH to VT and back, so not exactly flat. I maintained 68 mph on the highway; the front is lifted 2" with stock size General Grabbet ATX tires and the computer said I got just under 16 mpg. I had about 180 highway miles and 60 miles of back country roads and this includes the truck running for about 10-15 minutes in a parking lot to keep the AC on for my dog while we went into a farm store.
You won't see 20 mpg unless you're getting a diesel.
I suspect my mileage will go up slightly, but even so, my 2016 Ram 1500 with 5.7 and 3.21 rear with the front raised 2.1" and 34" tires got 17-18 mpg on the highway, so adding 1500# in weight, a taller truck,and far more capability, I'll deal with the fuel economy. I'm hoping I'll be able to eventually get 17 mpg in this truck.

 

[star_deceiver]

You’ll see 14-16 in everyday driving. I once got 18mpg on an all, slow highway trip (once). 8-10mpg towing anything with a flat front regardless of weight.

And remember, the 6.4 is happiest with 89+...

You’ll get better mpg with the Cummins but you’ll pay for that up front, in maintenance, and down the line repairs... either way, you’re going to pay...

 

[Albert525]

My 717 hp hellcat gets about 12 city, but my wifes pasifica v6 9 speed gets 17, honestly 12 city isnt bad for a big heavy truck.
I have driven i4 imports as rental and gotten 9-10 because they are so under powered it requires heavy foot to be slower than my 5.7L so honestly city isn't going to be good except prias.

 

[Firebird]

My 2018 Ram 6.4 got 12 in town