#2 for the MT is not a good point. I get better mpg shifting around the 2,500 rpm mark. 2,000 is to low for the MT FJ.
I drive an 08 manual with the stock off road drivetrain 74,000 miles on it and I get about 16 in the winter, and 18+ in the summer here in Alaska. I only run 91 octane in it, though I have noticed a mileage improvement with 91 octane Chevron, and Shell fuels on long distance drives over other “brands” of premium. In a 1400 mile trip this last summer using Shell I got 21.4 mpg, though that was 95% hwy driving.I haven't even had it a week , maybe learning to drive it will make a big difference. But I drove it home on a 300 mile interstate trip and all I got was Hi sixteens. I thought maybe the gears were changed to make it absurdly low ( the previous owner did tow a lot with it) but the speedometer is spot on. It's a 07 manual with crazy high miles... and in response to other posts... I knew the mileage would be bad, I did not know it would be this bad. Any thoughts at all are appreciated!
I can pretty much guarantee that you'll see an immediate improvement in fuel consumption if you replace the two air/fuel sensors in the exhaust system.I’m in an 09 with 85k and getting 15/16 at best with KO2s. They are a size bigger which contributes to the reading. Used to get much better mileage when I got the FJ I feel; 275 miles to the tank vs 235 nowadays. Was up in the 18/20 range back then. Maybe have a sensor going bad but haven’t had any lights come on. Figure it’s just part of driving an FJ!
2014 4WD auto ... after initial 6K mile break-in, on stock Dunlop tires, without roof-rack or any other mods, driven conservatively (65 max on freeway, gentle starts, etc.) was able to consistently achieve mid-23 MPG.
With substantial mods (aluminum roof-rack, hard-shell RTT, aluminum armor, fridge, load range E KO2 tires, on-board air compressor, etc.) I can still consistently achieve slightly over 21 MPG on flat So. California freeways, again with very conservative driving technique. Any head-wind, on-ramp acceleration contests, etc. will affect fuel consumption pretty dramatically.
With a real-time display of instantaneous fuel consumption (through the OBD interface), you will very quickly learn what combinations of engine RPM, throttle position, engine load, and gear will push fuel consumption down into the single-digit range, and how to avoid those conditions.
I kept close track of fuel consumption during the '19 FJ Summit (So. California to Ouray), and got an on-highway average of 20.66 MPG, with the AC on for 90% of the trip. I weighed the rig In Cortez, CO and was shocked to see 5540 lbs. ( 2 people & a dog) with a full fuel tank.
Howzit guys im from South Africa, i also have a FJ love the car!! mine 2012 model i find that the car can either be extremely heavy on fuel or reasonable.The manuals are full time 4WD. Mine is an auto and therefore 2WD unless I engage the 4WD. My experience isn't relevant to your situation.
IIRC FJs until 2010 recommended/required premium fuel? Someone with more knowledge will confirm or deny. I know there are threads on this an whether or not it makes a difference.
As for driving style... When I purchased my FJ, I know mine became a bit more relaxed for a variety of reasons. Mainly, I coast more and use the brakes less. While I think the brakes are mechanically excellent, physics and all terrain tires have relaxed my stop and go tendencies.