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I currently own (free and clear) a 1998 GMC Sierra SLE 3500 Crew Cab Long Bed with 107K, 4" lift. I love this truck but hate the lack of gas mileage. When I bought it gas price wasn't a problems, well now it really is. I have been trying to locate mileage numbers by the book but can't find any and fuel economy.gov dosen't list that vechicle because of it's GVW. I am currently getting about 4-6 mpg .
I am now looking to sell or trade for a Toyota Tacoma Extra Cab V6. Any suggestions, pros vs. cons?
Location: Still in Portland, Oregon, for some reason
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4 to 6 mpg? WOW!!! My friend's dad has an '07 Tacoma Crew Cab but he really doesn't drive all that much (it only has 16,000 miles). The car seems well-built and is comfortable and quiet. I'll ask what he's getting for mileage the next time I see him.
I currently own (free and clear) a 1998 GMC Sierra SLE 3500 Crew Cab Long Bed with 107K, 4" lift. I love this truck but hate the lack of gas mileage. When I bought it gas price wasn't a problems, well now it really is. I have been trying to locate mileage numbers by the book but can't find any and fuel economy.gov dosen't list that vechicle because of it's GVW. I am currently getting about 4-6 mpg .
I am now looking to sell or trade for a Toyota Tacoma Extra Cab V6. Any suggestions, pros vs. cons?
Thank you in advance.
What engine does this have? I am going to say it should get 10-12 MPG. If it is getting 4-6 something is definitely wrong with it.
Sad to state not a typo. Bear in mind it has a 7.4 V8 or 454, 4" lift (not a big lift by any means) and 35" TOYO MT's. It's a nice truck. I put in 10 gallons and went 44 miles city so 44/10=4.4 miles per gal. Sucks
Last edited by stevehgi; 03-17-2010 at 03:39 PM..
Reason: clarification
What engine does this have? I am going to say it should get 10-12 MPG. If it is getting 4-6 something is definitely wrong with it.
If something is wrong, what could it be? Everything seems fine, I had her for 6 years and have had no major issues. Head gasket 2 years ago, regular oil changes, accelaration is good
Has your speedometer/odometer been recalibrated to the bigger tires? I think by 98 GM trucks had that feature.
Have you ever checked your speedometer? Go out in the boonies on a state highway where you can run 60 MPH as indicated by your speedo - it should take you exactly 5 minutes to go 5 miles, if the speedo is right.
The lift alone with the large tires kills the under chassis drag on the highway mileage.Then the engine RPMs it takes to pull those tries;it could easily get that in the city and near ten on the highway.I had a standard F150 4.8 with tow package that averaged 10-11 mixed and 15-16 on highways with standard equipment.That is driivng at the speed limit and easy on the gas too.A friend with the same but large I believe 5.2 liter got about 11 on the highway.
7.4L gas = worse fuel economy.
3500 = heavier chassis = worse fuel economy.
Lift = more drag = worse fuel economy.
Large tires = more weight = needs more power to move = worse fuel economy.
Mud tires = more rolling resistance = worse fuel economy.
City driving = stop and go = worse fuel economy.
So with all that said, I don't think you're far off on any of it. My work had a 2000 C2500 ext. cab/8ft. bed with the 350. With a smaller engine, a lighter chassis, and highway tires, the truck reports that were turned in yielded 8-12 mpg.
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My friend's dad has an '07 Tacoma Crew Cab but he really doesn't drive all that much (it only has 16,000 miles). The car seems well-built and is comfortable and quiet. I'll ask what he's getting for mileage the next time I see him.
