Just wondering what gas mileage that full size Chevy truck owners are seeing
with their 5.3 liter V8. I have a 2006 4x4 with the 5.3 liter aluminum
engine. I only have around 1,600 miles on it at this time, but am seeing an
average of 17.5 MPG. I drive about 40 % highway and the rest is state routes
and around town. I'm not unhappy with the mileage as my 99' 4x4 with the 5.7
liter would only get around 15.5 MPG. Just curious as to what others are
getting with the 5.3 liter.
Well, I am certainly jealous of all posters in this thread. My 2000
z71 (80k) gets about 15 on the highway and 12 around town. It's done
this since I bought it in 01. Luckily, as long as it runs good and is
reliable, I could care less.
Not that this applies to you, but here is a personal observation.
My wife has a 2000 Buick that is supercharged. When she drives it she gets
21MPG, when I drive it I get 26MPG. Same with my truck, I drive it I get
around 18MPG, she drives it she gets 14MPG.
She has a lead foot.
I drive the vehicles like there is an egg under the gas pedal.
It makes a difference. With gas at $3.00+ per gallon, a big difference.
That is true and I 100% agree. I have taken it on the interstate,
unloaded, cruise set @ 75 mph and still get about 15.2 though. I do
have 285/75/R16 BFG AT KOs on it and that might make a difference as it
has those tires when I bought it. I also believe it has a 3.43 gear
My 2000 Z71,5.3 averages 15 around town,18-19 highway. 24-26 on the
highway, in my opinion, is nearly impossible unless you are being pushed by
another vehicle. I also had a '97 with a 5.7 and the best I could do on the
highway was 18.
I agree, there is no way a full size Chevy truck will get mileage that he's
claiming. Unless he has one of those "tornado vortex spinners" in his air
inlet. And they're only $49.95 at www.seenontv.com/sucker_born_every_minute/
Still you are not standing still long idling because it would not be
that high if you were. Simple physics but glad your happy. I use 4
banngers for my comuting and I consider 25 to 30 good town and 35 to
40 on the road the norm to. At today fuel prices if you drive alot
you can easily save several thousand dollars a year in fuel cost and
save enough more in several years to pay for the 4 banger and then
some and make the big iron last a lot longer too.
Something is not right here because given a theoritical efficency of
30% that mean you would burn a average of 1.5 gallons a hour to
develope a average HP of about 22 HP to flywheel (50 x 1.5 x .30%) and
22 HP average HP is not going to power that truck thru traffic
(actually less if you consider fuel loss at idle) You are being
straight about something here.
I log every fill up in a spreadsheet. I get a pretty good mixture of
city/highway. Truck is a 2004, extended cab, auto, 4x4.
Total Miles 25,873
Total Gallons 1480.19
Total Hours 696
Avg. MPG 17.480
Total Cost $3,493.23
Gallons / Hour 2.13
Avg. MPH 37.158
Cost / Mile $0.14
Eugene...doing a rough calculation, tells me that you are doing more
highway than me and getting slightly better mileage. Simularly Total Miles
= 25109.6 and sucked up 1520.87 gal reg gas. Engine hours 20.7
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