Fuel Economy: What is your average MPG?

[Jman423]

No matter what type of platform you drive, what type of fuel economy are you getting?

Share your record high's and low's for both highway and city driving. You might also want to identify any modifications you might have on your ride.

 

[ItsOnVoy]

My everyday city driving I get a average of 12-14 MPG
For Highway I will get a good 17-20MPG

No mods have been done besides the once in a while injector cleaner put into the tank.

 

[tbuckalew14]

I was just searching for mpg thread...

Most i've ever hit was 17(according to the DIC) on a 10 hour trip.

Normal everyday is between 13-14(according to DIC).
Exhaust, intake and tune. Lost around 1 mpg with larger tires.


My mom(according to the DIC) is around 12-13. No mods less than 50k miles.

I've done the math to figure it out mpg with out the DIC a long time ago. It was pretty close match.
I changed the fuel filter and sea foamed about 6 months ago on both trucks.

 

[Wyle]

I've tracked my mileage religiously since I bought my TB with 14k miles on it. Spreadsheets/smartphones are nice tools.

Total overall mileage (day 1 - today): 17.85 mpg
Worst ever (towing a trailer with 6 canoes): 13.3 mpg
Worst over a period of weeks: ~15.8 mpg
Best ever (partial fill): 23.95 mpg
Best tankful (highway trip Grand Canyon): 21.88 mpg

Weirdest fact: I consistently get a little better highway mileage when I have a canoe on the roof rack (6 trips).

Here's more data then anyone wants.
View attachment 18428

Forgot to mention - Its been stock until I installed the 2" lift last Nov.

YOUR MILEAGE MAY VARY.

 

[jham]

I average 16 to 18 for non highway and 20 to 21.5 on the highway from paper calculation no dic these numbers have dropped 1 to 2 mpg after I installed marks new style lift and 265/70/17 I will see how the numbers look in a couple weeks after I put the body lift and 285/70/17's on along with Barton MD bumper and skid plate

 

[kardain]

Fuelly tells me 17.8 mpg, mostly highway... No mods done that would impact MPG...

For the charts:
Lilblazer (Chevrolet Trailblazer) | Fuelly (lilblazer is a name given by a friend, jokingly comparing the TB to his K5)

Best: 21.6 (Seattle to Missoula trip)
Worst: 15.8 - not sure what happened there

Haven't stopped logging, just haven't had to fill the tank since the last entry.

 

[Boricua SS]

i usually average 10-13 mpgs in the city, and a usually 17 highway...

record for me was 19.2 mpg's on the way back home from the Indianapolis meet last year (5 hour drive for me)
mpg mods are tune, intake, full exhaust, and efans

 

[Fire06]

According to the DIC I can get about 10l/100k which works out to about 24 - 25 m/g to the us gallon. To get this I am doing about 60 miles hour with the cruise on.I must say that this is not into a head wind either so I guess it would be ideal conditions

 

[stormsurge]

My SS=11 to 12 city. 14 to 15 highway. 03= 14 to 15 on gas alone city. 15 to 16 with hho kit city. 21 to 23 highway on gas. never tried the hho on the highway. Prob not much change. ill never get around to hooking it back up lol. not worth the time.

 

[TexazReece]

I'm currently getting 17.8 mph city, I have yet to put on highway trip bit will soon for Marxist head N.O. here I come :wootwoot:

 

[Matt]

Averaging 15-16 city and 21-23 highway. Best was 24 mpg highway from Tallmadge to DuBois, PA at 70mph. Worst IIRC, about 13 city. No real performance mods except for an afe air filter and hogged out airbox.

 

[DJones]

With current setup: 13 MPG@70MPH, 17MPG@60MPH avg. 16.5MPG
When stock: 21MPG@70MPH, 24MPG@65MPH, IIRC

 

[fishguy1123]

Haven't done the math yet but the dic shows average city-18 and hwy 23 so I'm guessing it's 2-3 less in reality. Stock, 148,300 miles.

 

[rcam81]

Around town 17 to 18.5. On the e-way 19.5 to 21.5. Always hold the speed to 70 on the e-way.
Clean the throttle body every spring (to get rid of the winter gas residue).

PCM4less tune and K&N CAI.

 

[Canadian Mike]

Over the past few years, I've been averaging 14.9 - 15.2 litres/100kms [annually]. For US folks, 15.5 - 15.8 mpg.

 

[Sparky]

I average 17-18 somewhere in there. I do drive mostly highway.

My record was 23mpg fall of 2010. Freak tank, don't know how. My second-best was just last week at 22 mpg. Another freak tank.

Record low for me was a tad under 15 when I moved and towed a 6x12 Uhaul trailer.

No mods done to it that would affect anything. I plan on efan conversion sometime this year and a PCM4L tune.

 

[jrSS]

I get roughly 17mpg's on highway and 15 in city.

 

[Denali n DOO]

I'm getting about 15-16mpg in the city and 21-22mpg on the hiway. I have 3:73's and run a smaller tire, 255-55-18's.

I know the smaller tires increased my daily drive from 109km to 112km. I'm not sure what effect the smaller tires would have on the DIC mpg's ?

 

[Porkins]

19mpg combined.

 

[Envoy_04]

I get about 15-16 with light city and mostly 2 lane highway driving.

Running 65 MPH on the interstate gets me 19-20 MPG, on hilly terrain. Running 70-75 MPH on the same terrain gets me 16-17 MPG. I'd imagine that on flat ground running 65 MPH would get me 21-22 MPG.

Amazing how much difference in MPG a few MPH can make.

 

[meerschm]

still stock. new Firestone Destination LE tires

23 mpg on the way north on I-95 from VA to New York (reset after warmup, speed a steady 65-70)

tires were 4 psi over. wanted to be full next day when temp was 50 degrees colder.

on the way back, towing a chevy Cobalt on a U-Haul tow dolly, 14 mpg.

around town, 15-16

 

[Too Fast]

still stock. new Firestone Destination LE tires

23 mpg on the way north on I-95 from VA to New York (reset after warmup, speed a steady 65-70)

tires were 4 psi over. wanted to be full next day when temp was 50 degrees colder.

on the way back, towing a chevy Cobalt on a U-Haul tow dolly, 14 mpg.

around town, 15-16

Wow someone who understands the effect that temperature plays on tire pressure. Nice!

I have the same tires and get almost 20 highway according to the DIC.

Does anyone know if the DIC has a rolling reset, what I mean is does it only figure out the average for the last 500 (or whatever) miles? Or does it only reset when I reset it?

 

[Fire06]

I think it is a continual average from the last reset.

 

[Hypnotoad]

Dang, the best I've ever gotten with mine is 18mpg. I typically average 15-16mpg. I don't even want to know what I'm getting with all the 4 wheel drive I've been using with the bad weather lately.

All I have for mods is a 2.5" lift with stock tires, and I have 3.73 gears.

 

[willbill92]

I have been getting about 15 city driving and around 19.5 to 21 on the highway. The only thing I have done is clean the throttle body every 3-4 months. Other than that completely stock.

 

[HARDTRAILZ]

06 4.2L 4x4 on 35s with 4.10 gears

16/17 on highway

13/14 in town

 

[BlazingTrails]

I have been getting a combined mileage 15.08 mpg. before i did all the mods I was getting 16.8 combined. it is a lot faster now. the mods are listed under my profile.

 

[KNBlazer]

4.2 EXT LS
16 combined

 

[hayes]

I have just started tracking again. I correct mileage for the over sized tires.

 

[dmanns67]

3.42 gears with 265/50R20 100% highway @ 70mph- 21.5mpg.

Typically I drive 20/80 city to highway and average 18.5mpg (52 miles round trip to and from work).

All city I am around 15mpg.

 

[smt 59]

My DIC says 14.2/100kms

 

[Revans381996]

15 mpg combined

 

[HARDTRAILZ]

Drove over 500 miles this weekend and kept track overall. It was a mix of 70-80 mph interstate, some 55-60 SR, and some city and more than hour of minimal movement rush hour traffic. I got right 16 mpg overall with hand calculating it.

 

[blazinlow89]

Trailblazer 12 around town, 15 highway. Avalanche 14.5 around town, 20-21 highway.

 

[glfredrick]

I'm now seeing averages with the TB in the 14.5 mpg range. Something is not right because I used to see 18.5 around town and 21 on the highway. No DIK, so these are all calculated numbers. Of course, I'm now over 160K miles and have that peculiar fuel smell on startup (just changed the filter, plugs, air filter cleaning, and probably a new cat next).

PCM 4 Less tune, CAI w/modified stock cold air box running True Flow filter, cam actualtor replaced, resonator delete, Amsoil throughout, 245 X 70 X 16 Firestone Destination AT, crossbars removed, tires air to max allowable.

My Rav 4 started at 21 MPG when I purchased it used in December w/ 121K miles. Plugs, wires, air filter, tires pumped to max allowed, Amsoil throughout and a lot of fiddling around with fuel choice. Works best with non-ethanol mid grade and I see a 2 mpg addition just from fuel. That same fuel makes no difference to the TB. Now averaging 27.4.

My stupid old behemoth 95 Dodge RAM 4x4 with a Cummins diesel (tinkered with a tad... ) sees over 24 on a regular basis. It tows at 18 or so pulling a car hauler and my off-road rig, mostly in hill country. Who off-roads on flat ground?

 

[HARDTRAILZ]

I'm now seeing averages with the TB in the 14.5 mpg range. Something is not right because I used to see 18.5 around town and 21 on the highway. No DIK, so these are all calculated numbers. Of course, I'm now over 160K miles and have that peculiar fuel smell on startup (just changed the filter, plugs, air filter cleaning, and probably a new cat next).

PCM 4 Less tune, CAI w/modified stock cold air box running True Flow filter, cam actualtor replaced, resonator delete, Amsoil throughout, 245 X 70 X 16 Firestone Destination AT, crossbars removed, tires air to max allowable.

I have same mileage and basically the same mods engine wise, so I wonder if it is the synthetic stuff losing the mpgs. ScooterScott on here went back to dino stuff on his jeep and gained 1.5 mpg and quit leaking oil plus is saving money. Not the only person I know that saw poorer mpg with synthetic oils.

 

[glfredrick]

I have same mileage and basically the same mods engine wise, so I wonder if it is the synthetic stuff losing the mpgs. ScooterScott on here went back to dino stuff on his jeep and gained 1.5 mpg and quit leaking oil plus is saving money. Not the only person I know that saw poorer mpg with synthetic oils.

i've consistently found increased miles per gallon with true synthetic (and I am adamant about TRUE Group IV oils with PAO base stock instead of the "stuff" that is merely called synthetic because they run it through the processor or add additives at a higher rate). I've been testing since 1977. Changing oil usually increases miles per gallon for a bit, but that would be expected. Also, you walk right past the fact that my Rav4 increased by several mpg after making the switch to Amsoil.

I'm thinking more along the lines of the old girl is getting tired and/or the cat is semi-plugged. I also think that the Firestone tires may be eating up a bit of mileage.

I know that you are not really fond of synthetic oils, and for the life of me I cannot figure out why. Lots of mythology out there and a lot of people have bought into it. I've been in a place where I could actually test the oil performance with true oil testing equipment (I worked in the hydraulics industry in the QC department and was skilled enough in engineering to have gained two patents while in that work) and I've proven the oils over time, having run them in all sorts of vehicles and scenarios since the late 1970s when Amsoil first became available to the public. I'm not disavowing GOOD dino oil, but one cannot tell if it is "good" by the name on the bottle! For instance, Pennzoil and Quaker State both ruined my testing equipment and I had to explain why I had to call in the factory rep to repair a $1 million Royco, yet those were the two top selling oils when I ran the tests. In any case, we're seeing the factory (factories!) now run synthetic right out of the box to deal with 100K warranties. That speaks volumes, especially to a guy like me who consistently saw 250K or more miles from most of my vehicles in an age where getting to 100K was a really big deal.

What I can say is that if you lived where morning temps were -25F, you would change your mind about Group IV synthetics in a heartbeat.

 

[HARDTRAILZ]

If it came with synthetic, use synthetic. If not, I won't drink the koolaid, my dino oiled vehicles get a quarter million miles and good mpgs doing so.

 

[High Voltage]

Might as well put some Nitrogen in the tires too! I'm going to try
Helium!![emoji3]

 

[glfredrick]

If it came with synthetic, use synthetic. If not, I won't drink the koolaid, my dino oiled vehicles get a quarter million miles and good mpgs doing so.

Ok... As long as you think full synthetic is koolaid... Again, once you know. I've done testing. It was remarkable.

Here is a chart that Amsoil produces. It is consistent with my own findings. Let me know when you get your own ASTM 4-ball test machine...