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Old 10-28-2013, 03:03 PM   #15
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There are so many things that effect the MPG, it is a relative number. This summer we traveled almost 8K miles in 19 states. Different blends of gas, speed, air conditioning, trailer weight and others can push the MPG number all over the board. For what it is worth, we averaged 11.6 MPG this summer with 95% of it towing and speeds of around 62 MPH.
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Old 10-28-2013, 04:00 PM   #16
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I have an 08 Crewmax and get about what the above have been getting. On the freeway empty on cruise control 20. Pulling a 25 foot Excella about 14 on flat and near 11 with a combination of flat and mountains. For me a great truck and nice to know my MPG is average for the group.
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Old 10-28-2013, 06:01 PM   #17
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Quote:
Originally Posted by slowmover View Post

If one avoids 4WD spec and uses closed shoulder tread tires (such as MICHELIN LTX A/S) mpg will be as high as can be across the range of use. Consider such an approach as Smart Spec (and for any truck would include a bed cover, etc, that eases aerodynamic quality) where the goal is the most work for the least fuel burn.
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There is another bonus with the Michelin LTX/AS. Every set I used on my Dodge ran 100,000 miles plus and still looked good when I pulled them. The downside was I usually had to order them. The LTX/MS is commonly stocked but not the / AS
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Old 10-28-2013, 06:10 PM   #18
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I got 130,000 miles from a set of Michelins on a 2007 Chevy Express.
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Old 10-28-2013, 06:51 PM   #19
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Mileage 2008 5.7

Call it an average of 10.5 pulling my 29' with my foot in it. That means 65- 71 MPH on the highways, I don't play around when I have to be someplace.

I get 15 on the highway/city average without the trailer.

Love my Tundra....
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Old 10-28-2013, 07:40 PM   #20
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We have an '07 Tundra Double Cab with 4wd and the 5.7 L. engine. We also have running boards which increase weight and a hard tonneau which also increases weight, but improves air flow. We live at 6,836', although I haven't seen much difference in mileage at sea level. Our trailer maximum weight is 7,300 lbs.

Towing we get 10.5-11.5 and not towing, 16-17. Since it is virtually impossible to buy gas without ethanol blended in, our mileage has dropped slightly as the use of ethanol has become universal.

Your trailer weighs less, so that will help. Different versions of the Tundra have different weights. Different people drive differently (we don't go over 65, but mileage drops after about 55).

While it is nice to have the best gas mileage available, if you work out the numbers over the time you will own it, you will find that a few mpg doesn't make a lot of difference in total cost for most people. The Tundra is reliable and the drive train seems invincible. If I were buying a new truck, I'd look at the 4.6 L. V8 with the optional supercharger ($3,999 extra, a dealer option). It should increase mileage when not towing by quite a bit–maybe comparable to the Ford EcoBoost (the real EB mileage, not the bogus, higher EPA numbers)—but towing may not be much different. It has been hard to find out much info about the supercharger, but a deep Google effort may turn up more. You could also look at the Sequoia if you want more plushness, but probably lower mileage.

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Old 10-28-2013, 08:59 PM   #21
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We have an 08 Tundra 5.7L double cab 2wd. We get very good gas mileage considering the power available with this truck. We get 13.5 mpg towing and 19 mpg empty highway. There are some good reasons for our fuel economy- first 2wd, my Tradewind weighs only 5,000 lbs loaded, we tow at 55-60 mph and we tow gently. Also I only use tow/haul in the mountains.

Terrific motor and 6 speed tranny. Great fuel economy considering the power since the motor is only turning 1,600 rpm at 60 mph. Not much downshifting or hunting for the right gear due to the high torque of the motor and the 6 speed transmission.

2 wd drive has its benefits- probably one mpg higher fuel economy, saved 3k on initial cost, about 100 lbs higher payload, nothing to break, but traction in wet grass can be a problem; the electronic LSD sucks. I have some Thule chains for when I do get stuck.

It is a terrific truck. No complaints except for the electronic LSD and like all the other half ton trucks, payload is a problem, and it is HUGE.

Dan
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Old 10-29-2013, 12:26 AM   #22
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I have the same truck. I believe there is a way to compensate or shut off the LSD. If I remember correctly, there is a button below and to the right of the steering column that has an iCon with a skidding vehicle on it. I'll look in the book.
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Old 10-30-2013, 03:48 PM   #23
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LSD not a problem.

Quote:
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I have the same truck. I believe there is a way to compensate or shut off the LSD. If I remember correctly, there is a button below and to the right of the steering column that has an iCon with a skidding vehicle on it. I'll look in the book.
Don't need to worry about the LSD, I quit all that kinda stuff back in the 70's. I have kept the long hair, beard, my Neil Young 8-Track tapes, and hang on to as many old VW's as the Wife will allow. I was quite upset when Levi Strauss stopped the production of the elephant bell blue jeans.
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Old 10-30-2013, 06:04 PM   #24
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LOL!

You owe me a new keyboard.
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Old 11-04-2013, 04:26 PM   #25
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I stumbled upon a decent website for checking out peoples fuel mileage for the vehicles they drive. It's Fuelly.com if anyone wants to check it out.
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Old 11-04-2013, 05:58 PM   #26
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No complaints except for the electronic LSD
What's wrong with the electronic LSD ?
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Old 11-04-2013, 10:07 PM   #27
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We have a 2008 CrewMax Limited, 5.7L V8, 2WD, with towing package; and we have had the exact same experience and mpg as TouringDan:

http://www.airforums.com/forums/f463...ml#post1372912

On a couple of trips between Phoenix and Tucson (very flat with no wind), we have driven 55-60 mph WITHOUT our Bambi in tow; and we have gotten as high as 21.5 to 23.0 mpg per our trip computer. At 75 mph, mileage drops to 16.5 to 18 mpg (again not towing).

While towing at 55-60 mph on this same stretch of I-10, we have gotten as high as 16.5 to 18 mpg. However, typical towing mileage averages 13.5 to 16.5 mpg, depending on terrain and wind conditions.

Regarding the Electronic LSD (limited slip differential), we have had no problems with it. However, living in the desert southwest, we have little use for it, except in sand.

A few months ago, we powered through deep sand (with our 19-foot Bambi in tow) at Lone Rock Beach at Lake Powell; and, if it engaged, it was seamless and apparently worked OK, since we got through it. However, use on ice and snow might differ.

Note: At low speeds, the Electronic LSD actually uses a computer to sense and apply the brakes to the drive wheel that has lost traction and is spinning, giving results similar to a mechanical, limited slip differential.
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Old 11-04-2013, 10:53 PM   #28
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Better on some days than others.
We got better mileage traveling at 65 mph Friday with no wind than traveling 55-60 mph today with high winds.
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