Lets talk Gas mileage and trucks...

[Westside88]

My '89 F250 extended cab with a 7.5 and 5-speed gets a max of 12 with usually 10 all around.  As much as I'd like to have a nice new disel truck, I just can't justify the expense.

[Whitehunter]

I drive 08 2500hd chev with the 6 liter 4x4
City I average 11 and hwy 15 on summer tires AT
And 14 on my studded duratrax in winter.  To me it all depends on your driving habits, speed and gear ratio in your pumkins! 
I also have an ugly 97 Saturn wagon I picked up few years back that gets 37 hwy.  Not that many cars can claim that title now and days.  Paid $1100 and all I had to do is change the oil last 3 years or so. 
Insurance costs me $33 a month and tabs $70.  Cheap investment plus a $ saver!

[STED9r]

2003 F350 crew cab with 6.0 diesel.
3:73 gear and 285/75 tires. Few hundred extra pounds with addition of bumpers/winches, inverters,tools and extra crap.
14-15 short runs in town while longer runs in town with it all warmed up good raises it 2 mpg more. 20-25 hwy but depends on traffic and wind and did see 28 on a trip to az.
Towing a 29 foot travel trailer and loaded between trk and trlr an extra 2k pounds nets 14-15 freeway on the flats, to difficult to figure towing mpg pulling the hills.
This is all hand thrown calcs and not off the lie-o-meter display that's as accurate as a blind bird.

[buglebuster]

2003 F350 crew cab with 6.0 diesel.
3:73 gear and 285/75 tires. Few hundred extra pounds with addition of bumpers/winches, inverters,tools and extra crap.
14-15 short runs in town while longer runs in town with it all warmed up good raises it 2 mpg more. 20-25 hwy but depends on traffic and wind and did see 28 on a trip to az.
Towing a 29 foot travel trailer and loaded between trk and trlr an extra 2k pounds nets 14-15 freeway on the flats, to difficult to figure towing mpg pulling the hills.
This is all hand thrown calcs and not off the lie-o-meter display that's as accurate as a blind bird.

my 04 6.0 same gears and tires got 13 in town 17 on the freeway

[RClare1223]

I got a 01 dodge 2500 5.9 cummins. I put a chip and an hot pump in it ran a 4" exhaust and a cold air intake. It has a 6spd manual in it and i average 27 mpg around town and 29 hwy. it is sitting at about 450 hp and 1000 ft lbs of torque too.

Hand calculated?

No, he flunked in math class. 

Never have and still don't own a diesel that cracks 20 mpg.  Got one thats close at 19 ish in the '05 Dodge.  The '07 gets 16 on a good tank.  The '02 gets 13 but it isn't exactly built for mpg.  120hp injectors and an Edge Comp box hot unlocked likes fuel. 

Im guessing your trucks are autos? Everyone ive talked to with an auto cant seem to get any better than 22. But all the stick guys get 25 plus. And im also guessing that if you have 120hp injectors you like to feel the power and cant keep your foot out of it. I know if i run mine hard my mileage drops under 20. But if im nice to it it does great. I took it from graham to eniat this year and averaged 29 over and back. You dont burn much fuel if you barley have to touch the throttle to keep it at 70.also my speedo is calibrated to my tire size. And my mileage is checked with my gps and my odometer. It doesnt matter if i flunked math class i used a calculator!

[6x6in6]

I got a 01 dodge 2500 5.9 cummins. I put a chip and an hot pump in it ran a 4" exhaust and a cold air intake. It has a 6spd manual in it and i average 27 mpg around town and 29 hwy. it is sitting at about 450 hp and 1000 ft lbs of torque too.

Hand calculated?

No, he flunked in math class. 

Never have and still don't own a diesel that cracks 20 mpg.  Got one thats close at 19 ish in the '05 Dodge.  The '07 gets 16 on a good tank.  The '02 gets 13 but it isn't exactly built for mpg.  120hp injectors and an Edge Comp box hot unlocked likes fuel. 

Im guessing your trucks are autos? Everyone ive talked to with an auto cant seem to get any better than 22. But all the stick guys get 25 plus. And im also guessing that if you have 120hp injectors you like to feel the power and cant keep your foot out of it. I know if i run mine hard my mileage drops under 20. But if im nice to it it does great. I took it from graham to eniat this year and averaged 29 over and back. You dont burn much fuel if you barley have to touch the throttle to keep it at 70.also my speedo is calibrated to my tire size. And my mileage is checked with my gps and my odometer. It doesnt matter if i flunked math class i used a calculator!

The one in the middle by year is the only manual and has training wheels on the rear.
The others are both running 35-12.50 18's and they suck the mileage way down. 
My chosen 3 years are all very well documented to be the worst mpg's in the Dodge 2nd gen and 3rd gen trucks, regardless of transmission.  And yes, auto's just exasperate it.
I was just messing with you on the flunked math part. 

[JLS]

Here is an example of where diesel trucks shine. I took my one to. 03 dodge cummins stick 5"ehaust from the skagit valley to cle elm and back. I averaged 18.5mpg with about 4k lbson the back of the truck on the way over and empy back. It really shines if you can keep it at 1800 rpm. I have had 20mpg driving from the valley to portland at 60mph the whole way. On this last trip I couldnt keep my foot off the trottle and did 70 a bunch. It has been my experience that HOW you drive has a huge effect on milage.

I've noticed the same thing with my Dodges.  If I keep my 04 at 55-60 (not very often unless I'm in Oregon) I will routinely get over 20 easily.  If I'm doing 70-75 it will drop to 17-18.

Winter blend diesel usually drops my mileage by about 10%.

[Wacenturion]

2002 Ford Excursion 7.3.....21.5 freeway.  In town 13-16 depending.

[runamuk]

My old 88 burban 4x4 with a 350 (out of a camaro) a 700r transmission(auto with overdrive) and tbi carburation I easily got 18-19 on the fwy and I put a lot of WA to ID trips on it, my best trip ever I pulled 21mpg was awesome

compare to my current ride 95 mazda 4x4 pickup with a 4cyl and manual transmission its a gutless wonder and cant merge on the freeway with a mild eburg headwind and tops I get maybe 20mpg

I had a 73 chevy 2wd with a 307 and 350 turbo auto heavy half ton it averaged I think 15mpg
79 silverado 2wd 350 and not sure which tranny auto 3/4 ton also averaged around 15mpg

plymouth valiant 73 slant 6 auto tranny my first car automatic also got around 16mpg

had lots of other cars only one that got stellar mileage was the 80's geo metro 40-45mpg and the engine didnt need a hoist/picker we just unbolted and lifted out  that was fun and hilarious. my ex never did maintenance and we got 300k out of the geo before needing an engine...ran all my other rigs as well to 250-300k before they blew up (again my ex did very little maintenance) or needed a new something big

[Dhoey07]

2003 F350 crew cab with 6.0 diesel.
3:73 gear and 285/75 tires. Few hundred extra pounds with addition of bumpers/winches, inverters,tools and extra crap.
14-15 short runs in town while longer runs in town with it all warmed up good raises it 2 mpg more. 20-25 hwy but depends on traffic and wind and did see 28 on a trip to az.
Towing a 29 foot travel trailer and loaded between trk and trlr an extra 2k pounds nets 14-15 freeway on the flats, to difficult to figure towing mpg pulling the hills.
This is all hand thrown calcs and not off the lie-o-meter display that's as accurate as a blind bird.

my 04 6.0 same gears and tires got 13 in town 17 on the freeway

You forgot to add the extra 5 mpg's cause you're taking on the internet. 18/22 

[FC]

Some of you are killing me with your fuel mieage. Some are pretty awesome. Some are pretty hard to believe!

I think a few only calculate mileage when driving down big hills. 

[et1702]

I got a 01 dodge 2500 5.9 cummins. I put a chip and an hot pump in it ran a 4" exhaust and a cold air intake. It has a 6spd manual in it and i average 27 mpg around town and 29 hwy. it is sitting at about 450 hp and 1000 ft lbs of torque too.

Hand calculated?

No, he flunked in math class. 

Never have and still don't own a diesel that cracks 20 mpg.  Got one thats close at 19 ish in the '05 Dodge.  The '07 gets 16 on a good tank.  The '02 gets 13 but it isn't exactly built for mpg.  120hp injectors and an Edge Comp box hot unlocked likes fuel. 

Im guessing your trucks are autos? Everyone ive talked to with an auto cant seem to get any better than 22. But all the stick guys get 25 plus. And im also guessing that if you have 120hp injectors you like to feel the power and cant keep your foot out of it. I know if i run mine hard my mileage drops under 20. But if im nice to it it does great. I took it from graham to eniat this year and averaged 29 over and back. You dont burn much fuel if you barley have to touch the throttle to keep it at 70.also my speedo is calibrated to my tire size. And my mileage is checked with my gps and my odometer. It doesnt matter if i flunked math class i used a calculator!

I have the same truck; 01 6spd 4x4 Dodge 5.9L.  I also have 90hp injectors, 4-inch exhaust, chip, cold air box and bigger turbo.  Had to put a bigger turbo in to keep egt's down while towing 29' 5th wheel up steep grades.  Slightly larger tires too; 285/75-16's.  3:55 gears, wish I had 3:73's.  As mentioned previously, combo of city and hwy daily driving I get 18 to 21 unloaded.  Towed my 5th wheel all the way to New Mex and back in 2012 and averaged almost 15mpg.  Plus, she has over 275K miles now and might leak a quart between oil changes (i.e., doesn't burn oil).

ET

[Dhoey07]

Some of you are killing me with your fuel mieage. Some are pretty awesome. Some are pretty hard to believe!

I think a few only calculate mileage when driving down big hills. 

 

[10thmountainarcher]

2012 ram 1500 st quad cab 6'3" bed. It's got the six speed and has 285 toyo open countries on it. I get like 10mpg in the city according to the fuel economy Gauge in the truck which I believe to be inaccurate due to the bigger tires. Only had it for 1k miles so I haven't done any of my own calculations.

[bullcanyon]

My bs meter is going crazy reading some of your mileage claims. I've read some outrageous claims before, but some of these take the cake!