It's because they still use port injection. Most newer engines use direct injection, which allows them to use a very small, precise amount of fuel delivered right to the combustion chamber, while older port injectors are difficult to characterize/ inaccurate at small duty cycle (like when you're at idle). On the flip side, port injectors are also super cheap and we don't have to worry about high pressure fuel pumps or carbon build up, so it's a give and take.
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Gas Mileage after first 1160 miles of driving truck... Sucks!
- Thread starter Caulk Boss
- Start date
St-na
Well-Known Member
That's exactly how I drive, don't believe that new trucks much heavier, my old 2014RAM had 31 gal.tank
theblet
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I haven’t really looked at the engine that good. I assumed all newer engines were all direct injection.
brian42
Ram Guru
The 5.7L HEMI came out in 2002 for Dodge/RAM trucks. There was an update in 2009 but it's the same basic design from almost 20 years ago.
Every20years
Active Member
So at 900+ miles now and I'm averaging 26.7mpg with about 50% highway, 25% city and 25% "suburban" driving. Oh, wait. EcoDiesel and loving it. I DID buy it for the mileage. Only reason I filled the 33 gal tank twice was when the pipeline got hacked in case fuel got limited in our area.
I was really hoping in the last two years Ram was going to get the Hemi to a 19/22/24 type of number but loving the EcoDiesel and the 3.92 on the grades in Colorado. Unless I am accelerating up a 4-5% grade I don't downshift out of D8 like my Dakota did (ok, not D8 in it, but still downshifted) or my wife's Pilot does. Just cruises along. Can't wait to see how it does on the 6-7% grades going into the mountains.
I was really hoping in the last two years Ram was going to get the Hemi to a 19/22/24 type of number but loving the EcoDiesel and the 3.92 on the grades in Colorado. Unless I am accelerating up a 4-5% grade I don't downshift out of D8 like my Dakota did (ok, not D8 in it, but still downshifted) or my wife's Pilot does. Just cruises along. Can't wait to see how it does on the 6-7% grades going into the mountains.
St-na
Well-Known Member
Yes, the last generation of HEMI starts from 2009, from 2013+ they added few kW and torque, but biggest improvement for MPG was 8 speed transmission+MDS
Warship2k15
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Ok on my truck the difference between driving it the way I want to and driving it at 70-74 mph with cruise about 1-1 1/2 mpg.
so for me I’m just going to drive it and not worry about getting the best mpg.
so for me I’m just going to drive it and not worry about getting the best mpg.
St-na
Well-Known Member
5th gen RAM are 250 pounds lighter than 4th gen. Tank is only 2 gallon bigger. It's not the reason for sure!
Probably the human element, then
LakesAZ
Well-Known Member
I have 4993 miles on my truck and I am averaging 17.06 MPG (Hand Calculated). That includes 1400 miles of towing, mostly hills and mountains (3500lbs of trailer and Honda Talon). So no complains from me.
Gitter
Well-Known Member
It's that 12" screen
5thGenLoco
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3.92 and being "a hoot to drive" is probably the reason for 12-13
Stop and go city kills mpg for mine. And it doesn't take long, either.
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mmcbeat
Active Member
Yeah, i don’t do power stalls, burn outs, donuts, etc. But I do enjoy “putting it to the wood” in the on ramps to the freeway.3.92 and being "a hoot to drive" is probably the reason for 12-13
Stop and go city kills mpg for mine. And it doesn't take longer long, either.
brian42
Ram Guru
Summer blend is finally here!
Winter blend = 15 mpg overall
Summer blend = 16 mpg overall
Doesn't seem like much but that's effectively 2 "extra" gallons per tank for me. I burn through a tank in a week (or a little sooner) and at $4.09/gallon (Top Tier 89 octane) that's an extra 8 bucks in my pocket for a "free" adult beverage conveniently packaged with 5 of his closest friends...
Winter blend = 15 mpg overall
Summer blend = 16 mpg overall
Doesn't seem like much but that's effectively 2 "extra" gallons per tank for me. I burn through a tank in a week (or a little sooner) and at $4.09/gallon (Top Tier 89 octane) that's an extra 8 bucks in my pocket for a "free" adult beverage conveniently packaged with 5 of his closest friends...
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St-na
Well-Known Member
Had the same result with my 2014, but not anymore. Best on HWY 17.5 now
Willwork4truck
Spends too much time on here
Patamaran
Active Member
Lol, I think that's the first time I've ever referred to may two four, as Victoria day weekend.Hay, ya' gotta tell the lower 48'ers what weekend you are referring to...
captainzombie
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The first few weeks I was getting worse mileage than my ‘18 Silverado, roughly 13 mpg. The last two weeks I’m getting roughly 15-16 mpg city driving and on the highway had it around 18.5 mpg. It’s a truck, and shoot my recently traded in Silverado had an extra 400 lbs of weight as GM was taking ages to trim the body style down. It’s kind of what I’m expecting.
