And the only 4x4 22R-E pickup in the world that gets 31mpg.

 

Ok, first of all I'll admit my speedometer may not be 100% accurate, but it's pretty damn close. I'd drive down the highway and have my speedometer indicating 60mph and time with a stop watch how long it takes to go from one mile marker to the next and its about 60 seconds give or take one second due to my error. But I also don't have big ass tires on my truck, I have 235/75/15.

While 31 MPG may be impressive for a four wheel drive pickup, it's not that great compared to a car. But unless the gas pump was inaccurate, I got 31MPG. I filled the tank all the way up until it just started to overflow, I then drove 103 miles and filled it up until it started to overflow again. The gas pump showed 3.35 gallons so ok it was like 30.75MPG, I rounded up. My gas gadge did'nt even move, it stayed above the full line. I drove the same stretch of road both ways to make it more accurate.

It's called hypermiling...when you drive in such a way to exceed the EPA rating. My speed ranged anywhere from 40mph to 55mph with an average speed of 47mph. The trick is to keep as little pressure on the gas pedal as possible, which means you accelerate slowly going down a hill and use that momentum to go up the next hill. You will loose speed going up hills. I was able to stay in fifth most of the time and downshift into forth on some hills. Try it out, you'll be amazed at how much better gas mileage you'll get when you drive your vehicle just right.

With that being said, I only get 20mpg when I drive normally around town, and if I was to drive 75mph, I'm sure it would'nt be much better. The epa rating I believe on my truck is 24mpg, I got 31 horray for me. Heck I was able to get 50mpg out of my 1993 Honda Civic LX, it was rated at 40mpg, I was impressed. To top it off, my O2 sensor is old as hell and is rusted into the exhaust pipe so there'll be no replacing that and I'm using 10W40 motor oil.

I dont know why 31mpg would be unbelievable. It's a little standard cab 4WD pickup with a fuel injected four cylinder engine with a five speed manual transmission and manual locking hubs. At 45 mph in fifth on level ground you barely need to touch the gas pedal.

 

I'm not trying to argue or say you're wrong or continue this discussion, but I can pump an extra 1-2 GALLONS of gas into my tank after it's started spewing gas out or the pump stopped. In my Chevy work truck I've pumped over 3 gallons of gas into the tank after it's spewed gas out of the nozzle. Your method isn't as accurate as you think it would be. Running an entire tank dry and dividing your total miles driven would be alot more accurate, but even then it's not totally accurate considering the speedometer accuracy and the fact that you can fill more gas into your tank than the manufacturer says it can hold (I've pumped well over 33 gallons into my Chevy and it's supposed to have a 33 gallon tank).

But yeah, flat ground at a constant speed is going to give you exaggerated gas mileage readings.

 

i get 630 km to tank on a sas on 35's km2's

 

Like Justin mentioned, I think it may be in the way you're filling up and how often. Really topping off the tank leaves more to error as does refilling after only 100mi and checking the mileage after only one fill. I got my averages by filling at the same pump at the same station after ~250mi on each tank and doing so over 10+ fillups.

I just find it hard to believe because this is the first time I have seen a serious claim over ~22mpg with a similar truck. 30.7mpg is only slightly lower than the best my little 2wd truck has done with a shell averaging ~62mph. That was in the dead of summer with zero wind.

I am also familiar with hypermiling, although I don't go to the extremes that some of the ecomodder fans do. I was able to go from ~28mpg to 31+ by just changing my driving style.

 

about 25 mpgs gold diesel

 

i know a guy with a 1 gen truck that gets 35- 40 mpg with a chevy v8 swap with 33 and a trail gear 3" springs
the engine is from a 2007 pick up and switches from four cylinder to 8 depending on throttle response and load
its crazy powerful and extremely capable

 

98 3.4, 4.10s, 35's, 5 spd, 3"lift, a bunch of heavy crap on it....15 mpg 90% city

 

I thought I would chime in. I kept track of my MPG on a recent 600+ mile road trip.

My truck is a 1993 ex-cab 4x4 / 3vze Auto tranny. I have about 176k on it and top end rebuilt around 165k. I also have a Hi rise shell on the back which is about 200+ lbs. Doing about 95% highway for the first leg I kept it around 60-65 miles per hour. I got around 16.5 mpg .. not bad considering I was hauling me, wife + the dogs and about 100lbs of gear in the bed.

On the way back got around 17.1 mpg.. again keeping at 60-65 miles per hour .. not bad overall.. Now city driving.. i get around 13-14 mpg..

Edit:
30" tires no lift..

 

So my last "tank" I got 19mpg.

I put 20 in her the other day (at 1/4th tank) and i got 7.5 gal (went up to 3/4ths). I went 140 miles till i hit the mark I got gas at. 140 miles for a little under a half tank.

This was alot of back roads driving at 45-65mph and 1 or 2 stop signs along the way, but there was a few miles of city driving. Im running 30'' M/T tires and im sitting an inch below factory. I also shift at 2100 on flat ground lol.

 

1990 4runner 3.0 5 speed 31" tires 4:56 gears
22 hwy running 65-70mph
1997 4runner 3.4 auto 265/75r16 not sure of gears
26 hwy running 70-75 mph
both around 16 in town

 

85 4runner: 4cyl 22re, 5spd, lifted, 35's, 4.88's, headers.
I get around 17-18mpg

 

85 4runner
3.0, lifted with 37s around 15 mpg in city

 

I get 18mpg in my 92 v6 5sp SR5 4runner
and
I get 19mpg in my 05 v8 auto Sport Edition 4runner

I thought the v8 would kill me on fuel, but so far its getting better mpg than my old runner! I've now owned a 1st, 2nd, and 4th gen runner.

you cant even really compare the 2nd gen and 4th gen, they are very different

 

I think I added to this thread back in the day when it started; I've since done a complete rebuild & am running 32" tires on 17" Tundra rims. Last check indicated a super high 210 psi compression which I'm running 3 clicks richer on the VAFM to compensate (I think this is what popped my HG before, a lean condition). Last tank with city/highway driving up to 90 MPH, averaging about 65-70, was 17.6 mpg.

 

With heavy AC use....
round town...14 mpg
highway...17mpg

 

Cruised up to Saranac Lakes NY from PA. Loaded truck with camp gear, two kayaks on top, wife and dog. Cruised about 70 / 75 for 20 mpg. Im happy with that.

 

Hyper miling.. Onto Toyotas:

My new-to-me 1987 turbo 4Runner 4x4 AT with 212K miles averages
- 20mpg on flat highways with minimal traffic at 80mph (AC off).
- 16.7 mpg on the tank over Grapevine (NOT 80mph, but I tried. LOL).
- mixed city - TBD

Speedo is just about deadnuts-on according to my Garmin.

Bone stock, tiny tires, missing front skid plate, didn't need hardly any boost on the flats (good thing, the exhaust leak didn't help boost).

New engine, TEC turbo, and 5 speed, probably dual cases at the same time, in the works, we'll see what she does then. Likely go down given the lower OD ratio, but maybe come back up some with the TEC's better downpipe - we'll see.

 

16 MPG at 82 miles per hour (3,400 RPM)

Once I get my manual hubs installed, fix my exhaust leaks, fix my PCV hose, and my wheels balanced I think it will be alot better. Oh, and replace my spark plugs. I was running really rich for awhile....

For the past 17k miles and 4 months its been pretty consistent....Though I realized I get about 19 (NOT totally accurate) when doing 70...

 

hypermilling to an extent is okay, but then theres the freak nuts who get like 70mpg+ drafting trucks, driving 30mph on the freeway etc. this is very dangerous and i hope you dont go down this road.