Toyota Tundra Forums : Tundra Solutions Forum

This blog is about my search for better fuel economy for my truck. I have a 2004 Toyota Tundra Double cab with a V8 engine, four wheel drive, and a four speed automatic transmission. Of all the years the Tundra has been available it appears that the 2004 DC truck, because of its size and engine/transmission configuration, gets the worst mileage of all the Tundras. The Gross Vehicle Weight of the truck is 6600 pounds and the EPA fuel economy rating for the truck is 14 mpg in the city and 17 mpg on the freeway. In all honesty these fuel economy figures are both generous and unrealistic.

I have a personal Blog with more detailed information about my testing and my findings. Detailed spreadsheets of my fuel economy and test conditions can be emailed from my email account at highwaylizard@gmail.com

Please feel free to subscribe to my blog here on this forum through the RSS feed or my personal Blog.

Thanks for looking and ask any questions you may have.

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MPG Numbers 6-30-2009

Posted 07-08-2009 at 11:21 PM by Highwaylizard

Filled up today:

208.4 miles mixed driving
Air conditioner the whole time
12.449 gallons Shell87
16.7403 MPG.8973 MPG decrease
over last mixed driving and A/C

These numbers are pretty darn good. The good fuel economy seems to have become par for the course – not that I am complaining. Considering that these numbers are the result of mixed driving with some trailer miles the MPG numbers are quite excellent.

I attribute the good fuel economy to the...

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MPG Numbers 6-27-2009

Posted 07-08-2009 at 11:04 PM by Highwaylizard

Filled up today:

325.7 miles mixed driving
Some trailer
Air conditioner the whole time
30 minutes of idling with air conditioner running
20.491 gallons Shell87
15.8948 MPG
.8973 MPG decrease over last city with all trailer and A/C

These mileage numbers were pretty evenly divided between city, highway and trailer pulling. The overall mileage is excellent with that in consideration. I am fairly well convinced (although I have yet to confirm this)...

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MPG Numbers 6-25-2009

Posted 07-07-2009 at 10:41 PM by Highwaylizard
Updated 07-07-2009 at 10:42 PM by Highwaylizard

Filled up today:

255.4 miles all city
All trailer – some heavy
Air conditioner the whole time
Significant idling at each property
18.529 gallons Shell87
13.7838 MPG
.0764 MPG decrease over last city with all trailer and A/C

These numbers were generated running the landscaping route during the mowing portion as well as hauling some debris from one of the landscaping projects that is nearly wrapped up. Even though these numbers are down they are...

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MPG Numbers 6-24-2009

Posted 07-06-2009 at 05:27 PM by Highwaylizard

Filled up today:

209.8 miles mostly highway
No trailer A/C all the time
30 minutes of idling with air condition running
30 miles in town
Cruise control at 75 MPH
12.494 gallons Shell87
16.7921 MPG
2.4529 MPG increase over last mixed driving

These numbers were logged while tooling around Indiana Dunes and Chesterton, Indiana. The truck spent about 30 minutes idling in various places with the air conditioner running full blast as it was...

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MPG Numbers 6-22-2009B

Posted 07-02-2009 at 12:21 AM by Highwaylizard

Filled up today:

159.8 miles nearly all highway driving
No trailer A/C all the time
Cruise control at 75 MPH
8.518 gallons Shell87
18.7603 MPG
.5407 MPG increase over last highway driving

These numbers are actually a little bit better than they appear on the surface. The first 22 miles were in town with a few stops. The truck idled at those stops for at least ten minutes with the air conditioner running full blast. Close to the end of the run we pulled over...

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