I spoke to someone at Dodge and was told that the new deisels in an effort to comply with EPA standards are only getting around 15 mpg hwy. I'm guessing the same must be true of Ford and Chevy. Has anyone with a 2012 experienced this dramatic loss in mpg?
My last deisel, a 2010 Dodge reg cab, 2wh dr, got 19 hwy and 14-15 city.
Road Phantom wrote: I spoke to someone at Dodge and was told that the new deisels in an effort to comply with EPA standards are only getting around 15 mpg hwy. I'm guessing the same must be true of Ford and Chevy. Has anyone with a 2012 experienced this dramatic loss in mpg?
My last deisel, a 2010 Dodge reg cab, 2wh dr, got 19 hwy and 14-15 city.
SCR and DEF lets you advance the timing and gives you a more agressive tune. That gets the heat up and gives you better mileage.
Lots of high teens and even VERY low 20's on the hiway at 55 mph.
Before DEF and SCR Cummins was king of mileage. After, Chevy and Ford took it away. If Dodge/Cummins ever goes DEF I think they will get their crown back. IMHO they are going to have to go there sooner or later. They will have to meet the new regs.
They are all pretty close in mileage even though Cummins is in last place.
~ Too many freaks & not enough circuses ~
"Life is not tried ~ it is merely survived ~ if you're standing
outside the fire"
Road Phantom wrote: I spoke to someone at Dodge and was told that the new deisels in an effort to comply with EPA standards are only getting around 15 mpg hwy. I'm guessing the same must be true of Ford and Chevy. Has anyone with a 2012 experienced this dramatic loss in mpg?
My last deisel, a 2010 Dodge reg cab, 2wh dr, got 19 hwy and 14-15 city.
Your 2010 is the same as the 11 and 12's as far as emissions so your mileage will be the same as your 10.
2011.5 they went to 350hp/800tq.
As far as mileage Ford and GM get Apples to Apples HONEST HAND CALCULATED MILEAGE less than 1 mpg better than Cummins.
My truck see sig straight highway 17mpg.
2013 Cummins will be using DEF.
With the little difference in mileage stick with the most durable proven engine CUMMINS with a 350,000 mile rated engine, 100,000 more than Ford and GM FACT.
Apples to apples the RAM CUMMINS wil cost thousands less than Ford or GM.
Take a Longhorn for a spin, I did and bought it! Awesome truck.
2011 Ram Laramie Longhorn 3500 Dually Long Bed, Cummins 350/800 HO, Towin Machine
B&W Companion Hitch, Maghytec Trans and Rear Dif Covers, AMZ/OIL Top To Bottom
2007 1/2 Mobile Suites 36 SB3 27,000# Combined
There are so many variables in how each person drives, plus wind, plus highway conditions, plus temperature, plus fuel grades, that to give a blanket answer like that is nothing more than hogwash.
My new Ford, if driven fast, can go as low as 14 MPG (even less in real head wind like conditions) to as much as 21 MPG in a slower speed with no wind.
To say one is going to get better is tough, because everyone drives differently.
They are ALL good diesels, and I personally have owned all three (Cummins, Duramax and now Powerstroke).
Fuel mileage on any of them was dependent on me. On how I drove that particular day, and what the other conditions previously mentioned were.
There is just no way to give a blanket statement that any will be better or worse than the next one.
One no longer has to look at the former USSR or North Korea for the world's worst propaganda. Just find the nearest brand fanatic here.
The Mad Norsky, Doll, Logan, Korey & Rocky
2011 Ford F350 Power Stroke dually
RV'ing since 1991
We never know where we're going till we get there!
Road Phantom wrote: I spoke to someone at Dodge and was told that the new deisels in an effort to comply with EPA standards are only getting around 15 mpg hwy. I'm guessing the same must be true of Ford and Chevy. Has anyone with a 2012 experienced this dramatic loss in mpg?
My last deisel, a 2010 Dodge reg cab, 2wh dr, got 19 hwy and 14-15 city.
Your 2010 is the same as the 11 and 12's as far as emissions so your mileage will be the same as your 10.
2011.5 they went to 350hp/800tq.
As far as mileage Ford and GM get Apples to Apples HONEST HAND CALCULATED MILEAGE less than 1 mpg better than Cummins.
My truck see sig straight highway 17mpg.
2013 Cummins will be using DEF.
With the little difference in mileage stick with the most durable proven engine CUMMINS with a 350,000 mile rated engine, 100,000 more than Ford and GM FACT.
Apples to apples the RAM CUMMINS wil cost thousands less than Ford or GM.
Take a Longhorn for a spin, I did and bought it! Awesome truck.
Road Phantom wrote: I spoke to someone at Dodge and was told that the new deisels in an effort to comply with EPA standards are only getting around 15 mpg hwy. I'm guessing the same must be true of Ford and Chevy. Has anyone with a 2012 experienced this dramatic loss in mpg?
My last deisel, a 2010 Dodge reg cab, 2wh dr, got 19 hwy and 14-15 city.
I don't think you'd see much of a difference between your 2010 and a 2012 Cummins diesel - truck for truck. The only difference is the addition of 150 ft-lbs of tq for the 2012. The salesman was likely talking about the drop experienced by all the big 3 diesels in 2007/2008. He was likely just spewing something someone "told him". Unless he drives one, I'd doubt his info is correct.
There hasn't been widespread reports on this forum of people complaining of a drop in mpg from 2008 - 2010 diesels going to 2011 - 2012 models. If anything, it's been the opposite.
2010 Cougar 322QBS 5er
2007 Dodge 3500 SRW Megacab, 4x4, 5.9L Cummins, 3.73, 48RE auto HYPERTECH MAX ENERGY or DIABLO PREDATOR tuning MBRP 4" Turbo back Scangauge2 for Boost, Coolant temp, Rail press & Trans Temp
Torklift Stable Loads
Which is reduced by things like ULSD (about 1-2%), biodiesel (if used), and also contaminants like water.
- Conversion efficiency
The fundamental conversion efficiency of the diesel cycle that varies by many things.
The largest single reduction from top conversion efficiency is operating the engine out of its optimal range.
That is, a heavy foot (e.g. high torque demands that cause lots of wasted fuel, high RPM where the pumping losses greatly increase vs. power generated.
A relatively small reduction comes from techniques needed to reduce emissions (e.g., lower combustion temperature, cleaning of DPF, etc.)
The net HP available is then further reduced:
- HVAC usage (about 5 to 10% of fuel consumption right there)
- accessories like Power steering, etc.
- accessories, electrical power generated to power vehicle and all the toys a modern vehicle have, including the heated seats.
Oh, then there are the normal things like air resistance (exponentially increase with speed), weight (mass) and rolling resistance.
Offline
