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Real world MPGs?

Old 10-31-2011, 04:49 PM
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Default Real world MPGs?

I'm looking for a new heavy duty truck and would like to hear some "real world" fuel burn numbers. I currently drive an F250 with the V10 gas and obviously don't get great mileage - about 10/13. My dilemma is do I go with the diesel and if so what kind of mpgs could I expect on the road when I am not towing if I go easy on the pedel? Which gets better fuel economy the Ford, Chevy, GMC or the Dodge? I will only be towing/hauling a small percentage of the miles, but still on a regular basis. Any help or ideas would be greatly appreciated.
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Old 10-31-2011, 07:01 PM
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Had a '03 Dodge diesel for 75k miles, never got better than 17mpg averaged about 14mpg empty. Towing 10k lbs it got around 11 to 12mpg. Two of my friends have GMs with the Duramax, both get roughly the same mileage, all trucks are auto 4X4s.
Motor Trend just did a long term test on a '10 Dodge diesel 4X4, drove it 20k miles, average mileage was 14mpg, you will see lots of much higher milage claims but you will never see any tests in any magazine come close to those numbers.
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Old 10-31-2011, 07:04 PM
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I pull a short distance with about an 8000lb boat. In 2010 I looked at the F250 diesels but found out that geared right an f150 is rated up to 11k. So I decided on F150 with the 373 gears. It gets around 18.6-19.2 Mpg driving it back and to from work. Most of it is highway and most of the commute is done at 65-74 mph. I love the truck and it gets decent MPG.
Hope this helps....Tim
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Old 10-31-2011, 09:39 PM
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2002 Ford Crew Cab long bed 4x4 with the 7.3 diesel.
Summer, 15 around town. Towing about 9,000 pounds, 11.5-12.

Empty on the highway in the summer: 19-23, slower the better.
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Old 11-01-2011, 03:57 AM
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2008 ford f250 diesel auto 4x4 driving 70mph no tow i get 19-19.5 towing 13.5k 33' hydrasport i get 10.5
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Old 11-01-2011, 04:16 AM
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2012 lml dually 10/16 mpg 10 pulling ,16 hwy average dont push the pedal to the max .
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Old 11-01-2011, 04:40 AM
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2011 gmc crew cab lml 4x4 only have 3400 miles but average around town is about 14 and on the highway up to 74 it averages 19 and at 80 it is around 17. I have seen 20.5 on a 100+ mile trip under 65 but this is certainly not the normal. For some reason around town it does better on fuel if you accelerate off the line faster rather than baby it.
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Old 11-01-2011, 05:08 AM
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2009 Dodge 3500 4x4 Crew Cab - 15mpg average for my stop and go commute, 18 to 21 mpg on the hwy not pulling and keeping it under 70 mph (over 70 mpg tanks fast), pulling a decent load of around 6,000lbs I average between 12 and 13.5 mpg. I run one size larger tire and have no modifications.
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Old 11-01-2011, 05:08 AM
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This great info! Keep it coming. I really appreciate it.
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Old 11-01-2011, 05:11 AM
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For some reason around town it does better on fuel if you accelerate off the line faster rather than baby it.[/QUOTE]

That's interesting - I did the same experiment and found exactly the same results with my Dodge to the tune of a 1 mpg increase over the course of a full tank!
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Old 11-01-2011, 05:29 AM
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08 f250 4X4 factory snowplow, towing, camper outfitter build. 5.4l auto, 4:10 LS, 18" wheels / tires. 11-12 mpg loaded, towing or around town.
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Old 11-01-2011, 06:30 AM
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Originally Posted by Knot Tight View Post
For some reason around town it does better on fuel if you accelerate off the line faster rather than baby it.
Same thing I've observed. Better to accelarate up to speed than baby it. 2011 F250 CC 4x4 PSD. Only 2,500 miles but averall average is 16.3 in mixed driving. Gets high teens to low 20's on highway pending conditions and speed. But 70 mph gets 20+ most of the time. Haven't towed yet.
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Old 11-01-2011, 07:19 AM
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What are "MPGs" ?

"Miles per gallons" ?
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Old 11-01-2011, 08:10 AM
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That is really interesting about accelerating up to speed. Maybe I've been babying the V10 too much. Looks like th diesel is the way to go. I'm not really a "Ford guy", just got an unreal deal on the F250/V10. Interested in the different mpgs between the Ford, GMC, Chevy and Dodge if any?
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Old 11-01-2011, 10:21 AM
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2012 2500 with duramax 20-23 highway 14-16 city 11 pulling 32' CC with 240 gallons of fuel.
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Old 11-01-2011, 10:47 AM
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The LBZ Duramax is the truck that is responsible for the fuel economy claims. It is a great motor and coupled with the 6 speed allison it gets great fuel economy. A good programmer is a must if you want to see 20 mpg (PPE, Edge, Or EFI live nick tuning). The LLY is almost as good as the LBZ. Also, Low Rolling Resistance tires can be good for another 2+ mpg. And I run my tires at max pressure on all 4. The LLY and LBZ get better economy than the 7.3, 6.0, and 6.4. I am not sure about the Cummins. I thought hard about getting a Cummins because of all the fuel economy claims.
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Old 11-01-2011, 11:04 AM
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'05 F250 6.0 4X4 (stock) with 285's

13-14 strictly city (12-13 with winter warm ups)
14-15.5 mixed around town
15.5-17.5 strictly highway depending on speed
10-11 pulling an 8,600 lb boat trailer.

All numbers are hand calculated. I've seen 18-19 on a couple trips but pretty sure those numbers were down hill with a tail wind at a steady 62 MPH with tires inflated to the max type of situations and not real numbers. Overall numbers also tend to go down with the winter blend diesel.

Funny thing is that I've never talked to anyone in person that gets the MPG numbers that you hear about on the internet. I'm yet to see a 7' tall 8,000 lb truck that gets a hand calculated 20-25 MPG.
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Old 11-01-2011, 11:11 AM
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Originally Posted by patrickg View Post
The LBZ Duramax is the truck that is responsible for the fuel economy claims. It is a great motor and coupled with the 6 speed allison it gets great fuel economy. A good programmer is a must if you want to see 20 mpg (PPE, Edge, Or EFI live nick tuning). The LLY is almost as good as the LBZ. Also, Low Rolling Resistance tires can be good for another 2+ mpg. And I run my tires at max pressure on all 4. The LLY and LBZ get better economy than the 7.3, 6.0, and 6.4. I am not sure about the Cummins. I thought hard about getting a Cummins because of all the fuel economy claims.
Don't know where you got your info, but it is a bit sketchy to me. The LB7 federal emissions package is considered the king of milage for the DURAMAX's as it can get better milage than even the LBZ with a 6 speed stock VS stock. I routinely see 20+ running 70-75 on the interstate(normally get 21-22 running 70), and this is about the norm for LB7's. The LLY dropped a bit due to the addition of the cat converter and the VVT along with the emissions tuning, but they can get close to what an LB7 does with a few mods. The LBZ with a good tune and exhaust can get as good and sometimes a fractional bit better milage than a LB7, but they require mods to do so. The LMM in stock trim is not that great, but with a DPF delete and a good tune can get right up there close to the LBZ. PPE isn't the best for milage as there tunes tend to be a bit smoky and waste a good bit of fuel. The PREDATOR does good for milage in the LBZ and I believe teh LLY as well. And there are MANY tuners out there who do great economy tunes with EFILIVE and HPTUNERS.

The old 7.3 powerstrokes did good on fuel economy as well espescially considering it's size and older technology. The 6.0L powerstroke with some mods though can get some excellent milage espescially considering how much heavier the super duty is in those years VS the other diesel trucks of that time. And the 6.4L gets up around 20 with a DPF delete and a spartan tune.

The oder CUMMINS with the VE pumps(89-93 rotary pumps) were said to get some crazy milage running empty, many saying they got mid 20's. The P pump 12 valve gained HP and torque, but lost some milage due to the fixed timing curve of teh P7100 inline injection pump. The 98.5-02 24 valve trucks could break 20 as well as I verified it several times myself personally when I worked for DODGE. I have a friend with an 03 auto, and he says he gets right at 20 pretty much no matter how he drives it empty.
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Old 11-01-2011, 04:00 PM
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Originally Posted by thefermanator View Post
Don't know where you got your info, but it is a bit sketchy to me. The LB7 federal emissions package is considered the king of milage for the DURAMAX's as it can get better milage than even the LBZ with a 6 speed stock VS stock. I routinely see 20+ running 70-75 on the interstate(normally get 21-22 running 70), and this is about the norm for LB7's. The LLY dropped a bit due to the addition of the cat converter and the VVT along with the emissions tuning, but they can get close to what an LB7 does with a few mods. The LBZ with a good tune and exhaust can get as good and sometimes a fractional bit better milage than a LB7, but they require mods to do so. The LMM in stock trim is not that great, but with a DPF delete and a good tune can get right up there close to the LBZ. PPE isn't the best for milage as there tunes tend to be a bit smoky and waste a good bit of fuel. The PREDATOR does good for milage in the LBZ and I believe teh LLY as well. And there are MANY tuners out there who do great economy tunes with EFILIVE and HPTUNERS.

The old 7.3 powerstrokes did good on fuel economy as well espescially considering it's size and older technology. The 6.0L powerstroke with some mods though can get some excellent milage espescially considering how much heavier the super duty is in those years VS the other diesel trucks of that time. And the 6.4L gets up around 20 with a DPF delete and a spartan tune.

The oder CUMMINS with the VE pumps(89-93 rotary pumps) were said to get some crazy milage running empty, many saying they got mid 20's. The P pump 12 valve gained HP and torque, but lost some milage due to the fixed timing curve of teh P7100 inline injection pump. The 98.5-02 24 valve trucks could break 20 as well as I verified it several times myself personally when I worked for DODGE. I have a friend with an 03 auto, and he says he gets right at 20 pretty much no matter how he drives it empty.
Got it from personal experience. Just giving him some info about the Duramax. The LBZ gets better fuel economy than the LMM and the LLY. Do you not agree with that? I didn't say anything about the LB7. Never had one. The LBZ with a programmer and exhaust gets better fuel economy than the 6.0, the 7.3, and the 6.4. I have never had a spartan tuner on our Ford trucks. Maybe that will make up for the fuel economy difference. Like I said, I have heard the Cummins get seriously good fuel economy, but I have never seen it for myself.. Just claims from people going off the "guesstimater." If I had actually driven one and seen it get better than the Duramax I probably would have bought one. PPE gets better fuel economy than you think. It smokes when you run it hard. But you don't hammer the throttle dumping fuel during daily driving. Yeah.. There are a ton of tuners that use EFI Live to make good fuel economy tunes, but I never said those are the only tuners to use. I just said they are good ones.
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Old 11-01-2011, 04:08 PM
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if a person has to worry about fuel mpg ,they cant afford it ,a truck will be a truck no matter the mpg .
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