Why didn't you consider diesels?

So what cab/bed configurations does the EPA use; and how much worse is the mileage of a crew cab pickup than its regular cab equivalent?

Automatic or Manual?

And did you use similar rear end gears?

You're right though, milage on trucks isn't science,,, it's Alchemy!

Isn't the Nissan V8 5.6L ?

Joey, yes it is.

*Corrected

1-2mpg, thats a HUGE difference, WOW!!!!

We didn't list diesel engines because those are most often found in heavy duty trucks. The question was about fullsize pickups. Heavy Duty trucks often are exempt from having to publish their mileage figures as well.

Oh please…
Why would anyone in the automotive world actually believe the EPA fuel mileage estimates?
It’s been proven time and time again for many years that the EPA estimates are woefully inaccurate, specifically in the truck/SUV market, and also in the mid size cars market segment.
A review through any of the popular magazines that do long term reviews of vehicles quickly shows that vehicles almost never get mileage as high as the EPA estimates and in the case of the “American” trucks and SUV’s the estimates are nothing but a joke, coming in between 35%-50% below the EPA’s ratings.

Wonder why?
Many auto manufacturers program their drive train system to get the best performance while running the EPA test cycle. The EPA test cycle is done on a dynamometer, the vehicle isn’t even moving. The test is designed to SIMULATE what the EPA considers a typical driving pattern. The test also doesn’t have ANY compensation for aerodynamics, and drag. The vehicle they send for testing doesn’t even have to be straight from the production line, it could be a “one off” that is setup for best mileage. What some better info? For a long time the state run emissions test facilities didn’t have 4WD dynamometer systems. In the Mid 90’s when all those SUV’s and trucks started coming out with full time 4WD, it wasn’t for the comfort of the drivers, it was to skirt around the EPA’s emissions testing, and to TRUST the OBDII systems output instead.

A simple search online for EPA fuel estimates will show you that the entire fuel economy rating system is under review and will be updated soon. A bit of a shame really, if the boys over at Oak Ridge National Labs had been spending tax payers dollars on alternative fuels instead of doing EPA mileage and emissions testing for the last 30 years, all of us would be better off.

Does anyone have a theory about how the largest Tundra V-8 engine gives mileage comparable to the V-6, which is 1.7 liters smaller? Is it what J.W. said?

Bob S.,
I've seen that before. When the Expeditions first came out they had either a 4.6L or a 5.4L V8, both getting the same mileage. (The difference is not as large as with the Tundra, but it is the same phenomenon) It probably has more to do with the different torque curves, and different cruising RPM's with the different motors, but honestly I don't know.

I can't find any mpg ratings for diesel trucks, are there no info out there.

Vehicles with over a 8,500 pound gross vehicle weight aren't tested by the EPA for mileage and are considered heavy-duty. Most diesel trucks fall within that classification.

I have owned a Dodge 2500 diesel extended cab since new. 5 speed manual gets 18 mpg in town, 22+ mpg highway. Those are all recorded figures. Worst mileage was 17.8 town, best mileage was 24.3 highway.

I need your help with my diploma thesis!
Who knows something about hybrid cars?
What is your opinion about it?
http://cmc.psych.uni-goettingen.de/wsg/index.php?sCode=252d302a060a1441

Thank you very much,
Anne

Best mileage? Is this a joke? This is America isn't it? As long as it can pull a 15 ton boulder, a 747, or a house, and can play Toby Keith crap, who cares about mileage?

Signed,

Halliburton

I just bought the new Dodge Ram 1500 with the Hemi 5.7 liter motor. It has the MDS system which is supposed to save me 20% on gas mileage. Does anyone have any info about this MDS system? The truck is brand new but it is only getting 10.7 miles per gallon in the city!

I drive my 2006 Ford F-150 4-door 2-WD 5.4 Gas V8 7 miles to work and back every day, in Memphis, with traffic. I get between 13.5 - 13.7 miles per gallon.

My 2003 Dodge 3500 single rear axle 4x4 Quad cab with a Cummings, no modifications and auto 48RE 3.73 gears get consistently 13.5 mpg city driving. Highway with out towing, depending upon the speed average 14 mpg at 80 mph to 20 mpg at <60 mph. Towing trailers of 20,000 to 24,000 pounds (including truck), 9 to 12 mpg at 60 to 65 mph. All figures are calculated at each fill up. 70,000 miles on it, never had it in the shop for a repair except for just replacing original front brakes at 65K.

Space travel possible, 30mpg on a truck no way! whats wrong with this picture?

I can't understand it either. I get 24 mpg, around 750 miles per tank!!! It's an 02 Dodge Ram 2500 with a Cummings 5.9L TDI in it and a 6 speed trany. 140,000 miles, 4 doors, long bed, and heavy duty frame. Compared to the gasoline truck that gets 12-16 mpg. Shoot, It does better than most cars out there. It's got plenty of power on tap too. It makes around 400hp and 800 torque with the extras I've added. I routinely embarrass those rice burners on a daily basis. It routinely pulls horse/car trailers and can do 1/4 mile in just over 12 sec. I can't understand why someone can't bring a compact diesel to the us in a small truck or car. I just returned from Afghanistan and there's Ford Ranger diesels everywhere over there!!!!