19.5 coming home 200 miles cc at 75 2/3 of the way and 80 the rest. Put it in economy mode
GX550 Real World MPG (8 Viewers)
- Thread starter supersix
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Reporting back after a few more miles. My average is around 14 mpg (city/hwy) with 21 gallon fuel tank. My larger (and faster) full-size Range Rover gets mid 20s with a 24 gallon fuel tank. Fuel economy seems too low in the GX.
The LX600 has 60 more horsepower, weighs more, and gets better fuel efficiency than the GX. Same 10 speed transmission. I'd like to know why. Can't all be aerodynamics.
Related thread on GX vs LX fuel economy: Why does the GX550 get worse MPG than the LX600?
The LX600 has 60 more horsepower, weighs more, and gets better fuel efficiency than the GX. Same 10 speed transmission. I'd like to know why. Can't all be aerodynamics.
Related thread on GX vs LX fuel economy: Why does the GX550 get worse MPG than the LX600?
15mph after 1000miles on odometer. I keep the car in Normal mode and mainly do city driving.
I didn’t reset my meter for the first 3500 miles and average 17.4 miles per gallon
On a 40 mile trip to work mostly highway I turn off the car and it says I got 20.4 miles per gallon not bad.
And other people have shown that the cars mpg seems to be a little bit low from what the measured with gasoline and miles gives you.
On a 40 mile trip to work mostly highway I turn off the car and it says I got 20.4 miles per gallon not bad.
And other people have shown that the cars mpg seems to be a little bit low from what the measured with gasoline and miles gives you.
A couple tanks of fuel ago I decided to make sure octane rating didn't make a difference. I can only get 91 octane at the gas stations around here but there is a gas station that happens to also sell 95 and 100 octane fuel. So I ran the GX down near empty (or as close as I dare with the incredibly inaccurate fuel gauge) and pumped in 9.25 gallons of 91 octane in and then 9.25 gallons of 95 octane. That's 18.5 gallons of 93 octane average on top of the 2.6 gallons of 91 octane that remained in the tank, so my true octane rating was 92-point-something. My fuel average was lower than average at 12.21 gallons based on miles driven divided by gallons burned. And the tank was much more expensive than average thanks to the $6/gallon 95-octane gas.
I'm finding that the main contributing factor is the type of driving, and economy mode also does make a difference. On my current tank (the tank after the race fuel experiment) I filled up at the local Costco and for the first three days my only driving was taking my boys to school, picking them up, going to karate lessons, baseball practice, etc. All local city driving, lots of stop lights and stop signs, inching through waiting lines, etc. and no highway at all. I was at 9.X mpg. So yesterday I put it in economy mode doing the same city driving and the fuel indicator inched up over 10 mpg. Then I did about a 20-mile highway run last night and I'm currently in the 11s. I also noticed that economy mode sucks. Feels like I'm driving a Yugo, or what I imagine a Yugo would drive like.
I'm finding that the main contributing factor is the type of driving, and economy mode also does make a difference. On my current tank (the tank after the race fuel experiment) I filled up at the local Costco and for the first three days my only driving was taking my boys to school, picking them up, going to karate lessons, baseball practice, etc. All local city driving, lots of stop lights and stop signs, inching through waiting lines, etc. and no highway at all. I was at 9.X mpg. So yesterday I put it in economy mode doing the same city driving and the fuel indicator inched up over 10 mpg. Then I did about a 20-mile highway run last night and I'm currently in the 11s. I also noticed that economy mode sucks. Feels like I'm driving a Yugo, or what I imagine a Yugo would drive like.
At 1600 miles now, mine has moved from 15.9 to ~18.5 in mixed city driving in Dallas. It is improving as it breaks in.
From what I am seeing your numbers are way lower than what I am getting. Kind of tough to know for sure how different your driving is. I am still bone stock. I have been using 93 i believe. Driving around town, not stop and go but not highway i was 18-19 ish in normal mode.
What trim do you have?
For sure, the tires on the stock Overtrail will make a difference vs the road tires on a Luxury or Premium trim model. And I am beyond the stock 33" Overtrail Toyo AT3 tires with my 35" Toyo AT3s.
I fully expected to pay about a 1 mpg penalty with my oversize tires. I was at an average of 14.20 before my lift & new tires. I am now at an average of 13.79 mpg. Really an insignificant 3% difference.
I'm heading to northern AZ camping this weekend with a good 100 miles highway there and then again 100 miles back. Mileage on the way up will suffer with over 5,000 feet of climbing but I'll average the highway trip up & back. I'll see if I can tolerate economy mode the whole way there & back again.
I have an overtrail plus with the stock tires until Friday, but then I am just going up to 275 70 18's little wider, little taller, but the e rating sidewalls. Roads up north in Maine have a lot of shale which eats sidewalls if you don't have 10 ply tires. But not lifting or anything, so don't think the mileage should change much.
I'll be interested to hear if your new tires make any noticeable changes to you average mileage. Being wider and heavier, they should decrease mileage but it may be an insignificant amount. Also being taller, your speedometer and odometer will be off a bit, so that will come into play - you will be traveling farther and faster than your speedometer and odometer are recording.
Windshield is more upright, full time 4wd, smaller turbos (lower cylinder compression ratio), less ground effect aerodynamics
Which tires are you changing to? I'm going to run stock tires for now, but I've really been looking at the Mickey Thompson Baja Boss A/T in 275/70/18. They are heavy but they look pretty amazing.
I am sticking with the toyos, just the e rated ones. I have used the at3’s on 3 vehicles and like them a lot.
I have a new set of the Baja Boss AT's on our 80 series. Super meaty up close in person. Roll nice but do have more of a light note and some times take a bit to "warm up" before smoothing out. I like the full range spec of the tire.
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Those look pretty dang awesome on there. Thanks for the insights too.
The majority of my last tank of fuel was my camping trip up on the Rim in Arizona - I filled up the night before we left on the trip, just a few miles of city driving, then about 100 miles of highway all the way up and only a few miles of driving while we were up there, 100 miles of highway all the way down. Climbed from my house which is at 1500 feet above MSL to about 7400-7500 feet, so a good 6000 feet of climbing. So, I knew the mileage would suffer on the way up but reap the rewards on the way down. The difference on this trip is that I kept it in economy mode the whole time. My average was 14.65 mpg based on miles / fuel burned. Not too bad - I was loaded up pretty good - I could feel the extra cargo weight.
Just completed a drive from wa state to San Diego about 1300 miles. I averaged about 20.3 to 21 mpg. Avg speed 75 mph. Loaded with about 500 lbs of gear. Used normal and eco mode about 50/50 split.
Miles till empty was about 313 at the beginning of the trip, last fill up miles to empty was 350.
Of note I did not see another GX 550 on the road.
Miles till empty was about 313 at the beginning of the trip, last fill up miles to empty was 350.
Of note I did not see another GX 550 on the road.
Im at 751mi with a 14.8 avg so far
Picked our Premium + this week with 6 miles on the odometer. Ours has the OEM roof rack. First 60+ miles, mostly city driving and idling, averaged 9.6 mpg. Was prepared for the worse lol .. Took it backroads for an easy drive, 40-55 mph and it went up to 19mpg. On a 80 miles drive today, mostly highway at 50-75 mph we got slightly over 21 mpg. Still think the tank is way to small, doesn't even show a range of above 290 miles when we we fill it up.
📷 Lexus GX 550 Random Images
📷 Lexus GX 550 Random Images
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