Raylan GIvens
Active Member
- Joined
- Jan 6, 2019
- Messages
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- 89
The 3.92 uses a lot of fuel on the highway once you start getting past 65-70 MPH. My mileage can only come close to matching the window sticker if I drive 55 MPH
What fuel are you using? 87? 89? 91?I've got the 5.7hemi with a 3.92 4x4 crew cab and tow package.....about 2400 miles on truck....I average 21mpg on highway.....I hope you guys are correct.....if mileage improves.....I will be really happy.
I totally agree, but with 20k miles, I am averaging 10.7 in the city. seems a bit low even for city. This is not towing anything either. 3.21 axle and 18" stock tire. 87 non-ethanol gas.I would never buy a truck if i'm worry about MPG.
I have same setup and 3k miles. Just got low 18s on a long highway trip. It is the 3.92 gearing. the 17/22 is for the 3.21 axle2019 5.7 hemi with 3.92,e torque. Rated at 17-22. Highway mileage is only around 16-17 and that’s driving speed limit, not passing etc. Truck only has 1300 miles on it. However it’s getting better mileage in town 17 mph, that etorque really seems to help in town? Just wondering if others have had same problem. Maybe better once I get a few more miles put on it? I was hoping for 21 at least.
I have same setup and 3k miles. Just got low 18s on a long highway trip. It is the 3.92 gearing. the 17/22 is for the 3.21 axle
All manufacturers do the same thing because it cost money to get the government certification. To do this for every conceivable configuration that could effect fuel consumption would be time consuming and expensive. I suspect your comment on tires was spot on. Take the Rebel's stock tires off and install 18 inch wheels and passenger grade tires and I'm betting the EPA figure would be met and probably exceeded."The stated mpg on your window sticker was based on a 3.21 rear axle truck with standard 18" wheels and street tires. However, FCA was allowed to "blanket" that mpg to all the different trim levels across the board, including the Rebel."
I wish I could get 10.7 lol.I totally agree, but with 20k miles, I am averaging 10.7 in the city. seems a bit low even for city. This is not towing anything either. 3.21 axle and 18" stock tire. 87 non-ethanol gas.
All manufacturers do the same thing because it cost money to get the government certification. To do this for every conceivable configuration that could effect fuel consumption would be time consuming and expensive. I suspect your comment on tires was spot on. Take the Rebel's stock tires off and install 18 inch wheels and passenger grade tires and I'm betting the EPA figure would be met and probably exceeded.
The last I knew they run the EPA certification cycle for two wheel drive and four wheel drive for each engine combination.
Best regards,
Dusty
2019 Ram 1500 Billet Silver Laramie Quad Cab 2WD, 5.7 Hemi, 8HP75, 3.21 axle, 33 gallon fuel tank, factory dual exhaust, 18” wheels. Build date: 17 July 2018. Now at: 030139 miles.
Thanks for that reminder. I almost always hear a fainter pinging sound and have been debating what to do about it...While operating on gasoline with an octane number of 87, hearing a light knocking sound from the engine is not a cause for concern.
I agree,definitely the 3.91s.I have the 3.21s in my longhorn,and am getting around the same,but only have 1200 miles on it,so it should improve after break-in.I think its the gearing, my brand new 2020 Ram got 20.4 on the way home from the dealer , hiway 70-75 mph. I have 3.21 axle CC 4x4 Laramie sport.