I am always skeptical of claims of 20+mpgs in 4 runners. I average about 14 with 90% city driving where my average speed is about 24 mph. I have been keeping very detailed records of my fuel consumption and have averaged 14.7 over the past 6 month. The best I have had was 17 on a trip with highway driving. I think a lot of people making outrageous claims are fudging the numbers. It is easy to cheat your mileage when you fill it to the point that it is over flowing one tank then the next stop it at the first cut off. I did that once while tracking and got 18 on one fill up then 12 the next.
I would love for someone claiming 20+ to show me real detailed proof that they can get that kind of mileage over and over.
Ask and you shall receive! This is most of the post I made to the "Real MPG" thread you started a few weeks back.
I always fill to the first "click". I never overfill, especially in the summer, because I don't care to have cold fuel going into my tank expanding and spilling. I never underfill, because I generally run to around 30-50 miles after the warning light comes on, which is about the distance it takes on my commutes to conveniently get to my usual gas stations, and if I cheated, I'd probably run out of gas. Oh, and the data would also be utterly useless, in that the only reason I bother to record mileage data is so I know if my fuel consumption is abnormal.
Of course, I can post just about any time range other than the following random samples. I just don't have a whole lot of summer data for the past few years owing to me getting a motorcycle to ride over the summer because the costs associated with driving the T4R were making me sick when gas prices hit around $3/gal.
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This is a 2004 T4R V6 SR5, of which I'm the original owner and sole maintainer (I don't do dealers or Grease Monkey).
I maintain the following columns in the log:
Odometer - Miles (trip odo since last top-off) - MPG - Gallons - $/Gal - Date
From that info, I can calculate just about anything to a reasonable accuracy, including how many gallons of gas I've put in the truck since I've owned it, and how much that gas cost overall, anything an app can do, and I've done it since I took delivery of the truck when it was new.
The highest average it gets is in the spring & summer when I have regular street tires that are the OEM specification & on the OEM rims.
(This is from when I was a field tech & I drove half in the mountains, half in the plains)
46299 - 400.0 -
20.2 - 19.8 - 2.71 - 5/9/06
46732 - 433.0 -
20.6 - 21.0 - 2.74 - 5/15
47150 - 418.0 -
20.2 - 20.7 - 2.80 - 5/18
47551 - 400.6 -
20.2 - 19.8 - 2.72 - 5/24
47950 - 399.0 -
20.0 - 20.0 - 2.70 - 5/26
48351 - 400.8 -
21.7 - 18.5 - 2.63 - 6/2
48738 - 387.0 -
19.7 - 19.6 - 2.70 - 6/7
With studded snow tires (on cheap steel 16" rims) & winter driving/fuel, and a lot more time in 4x4 mode, it almost never gets much over 16.5 MPG, usually around 13.5-15 MPG, even though the tires aren't even all that oversized. I blame the more aggressive tread, the studs, the driving conditions, and the winter fuel blend for that. Knowing all that never seems to keep me from wondering what is wrong with my truck that it would be getting such crappy mileage nearly every year when I barely clear 300 miles on a full tank.
105476 - 358.2 -
16.2 - 20.3 - 2.74 - 1/13/11
105805 - 328.8 -
16.6 - 19.8 - 2.90 - 1/20
106141 - 336.7 -
17.3 - 19.5 - 2.83 - 1/28
106476 - 335.0 -
16.5 - 20.3 - 2.94 - 2/4
106674 - 287.7 -
14.0 - 20.5 - 2.93 - 2/11
106994 - 230.0 -
14.7 - 15.6 - 3.00 - 2/17
There was also a stint in 2004 where I drove it hauling cargo as an express courier in the Denver area. That was 90% city driving like most folks probably do anyway, so it's more relevant to the average T4R driver's experience (unlike my daily mountain climbs).
12818 - 409.6 -
20.0 - 20.5 - 1.78 - 9/6/04
12952 - 133.6 -
20.6 - 6.5 - 1.75 - ?
13315 - 362.9 -
20.7 - 17.5 - 1.64 - ?
13590 - 275.0 -
21.7 - 12.7 - 1.84 - ?
14035 - 444.7 -
21.8 - 20.4 - 1.75 - ?
14416 - 380.8 -
20.4 - 18.7 - 1.80 - 9/11/04