My 23 GX is getting about 19 overall. Recent road trip to Utah, Az, Ca, and Nevada, driving mainly on highway, country/mountain roads, speeds ranging from 50mph, to 70mph, and in in some cases 80mph, I am getting about 20mpg. I was using Costco, Phillips 66, Shell, Maverik gas.

 

I don't mean to sound pretentious, but we didn't buy the GX for fuel economy. No one buys Toyota/Lexus trucks or SUV's for fuel economy, cuz they don't get GOOD fuel economy. haha

I think the computer says an overall average of 14.5, and my wife usually drives the kids on short trips to school and a fairly short trip to work, which is hard on V8's in cooler climates. We also tow our travel trailer, and when we do we are lucky to get 9mpg.

 

I’m just shocked that after all the screaming about the poor mpg of the V-8 the new GX550 gets only 1 more mpg. Lots of engine complexity and transmission gears for that minimal increase. Bet in the real world it will be worse, and being turbocharged I wouldn’t mess with anything less than premium gas 24/7.

 

Hi folks,

On my way to purchasing a second Gen.

So, what are you seeing in terms of miles per gallon in your beast? I know what they are SUPPOSED to get, but I saw a video that kind of shocked me - the guy is averaging around 11.

I have NO chance of getting my wife’s blessings with THOSE kind of numbers! My fingers are definitely crossed…

 

its pending location and driving style.

I just checked, and ours show 16.9 verge since we got it in Sep 2021, that is with almost 40k miles now.
We have seen 20-21 when driving constant around 80mph for 3h, but I'm in S FL, so its flat here.
Each tank is between 16 and 18, short trips, stop and go kills the economy

 

I get around 18mpg highway. Loaded up with rooftop cargo box and it drops to under 16mpg. City driving is the worst though. I’ll get about 13mpg in city. I’ve got a 2 inch lift and AT tires. Before the mods I could easily get 19mpg highway. I usually cruise around 70mph.

 

Hi all
I live very rural. Like one stop sign in town rural, & 4 stops and 2 lights on 50 mile drive to work.
Mountains with hills n turns, but I average 55mph with stretches of 65 and slow curves at 45.
I get about 17mpg average in this new to me 2010 G460.
wife n I went Pigeon forge and I did lots of idling with Ac on.
I got 10 mpg idling waiting for wife or me running in somewhere and she sitting in car.
i reckon an hour half maybe 2 hr idling and killed the mpgs.
I never had a car where idling killed it that much.
PS. All hand calculated, i don't believe lieometers. Also I fill up when dead low, run a full 20 plus gal cycle usually.

 

I was shopping for a 22-23 GX but had some professional changes come up causing my mileage to double (I have to work out of a remote site weekly). 100% of the added miles will be pure highway. What kind of mileage do you get going 70-80mph for a full tank with cruise set?

Basically I went from low yearly miles mostly mixed to high yearly mostly highway so I want to make sure the car still fits my needs.

 

.... I assume the majority of responses are "computer says" ... which is only accurate if one is running the OE tire size (diameter) ... which may be the majority ... but ...

 

I’d be running stock size tires without a bunch of mods, at least to start. My “extreme” use veers to snow not mud so I should be able to stick with tires with a decent ride quality and efficiency.

I can’t be the only one that hand calculates mileage on road trips! (I use Fuelly to track my mileage all the time)

 

I calculate every fill up - the last fill up, I had 13.7 mpg, the one prior to that 14.8 mpg, the one before that 14.3 mpg... this this is terrible on gas, but I don't drive much - I have a "stock" 2023 (17" KO2's, full roof rack from SSO, and a tune from VF (which was supposed to help slightly..)). I only use 93 octane gas, have since day one, and the best I've seen was on a road trip, where I saw 17.8 mpg. If you're overly concerned with MPG's, this truck is not for you.

 

Thank you. It’s less that I’m overly concerned with fuel economy and more that I should take it more seriously if I’m doubling my miles driven.

Going from 10k to 20k miles a year pretty drastically changes how long I intend to keep the car, how much I spend in fuel, things break from use not age like I’m used to, etc. I have to look at cars from a whole new perspective.

 

Totally get it - I drive just over 5k miles a year, try do do most of my "driving" with a cargo bike, when the weather allows, which gets ∞ miles per gallon, just have to eat a little more, lol - With that many miles, I'd look at something hybrid - we got my wife the UX due to the miles she drives, and she averages 47-50 mpg. The other thing with the GX, it has a very small gas tank, so you're looking at 300-350 (if its all highway, maybe a few more) miles before needing to hit the fuel station again.

 

Range is a really underrated quality of life metric.

I have a hybrid RX now and it’s not cutting it when I actually need an SUV. Fantastic car with a miserable AWD system. I wouldn’t buy another with the eAWD or whatever it’s called, I’d want something with the electric motors before the transmission and diffs. It’s hypothetically possible to have incredible 4WD with 4 independent electric motors but that is not what Toyota is doing.

 

On a good trip, I get 19mpg. I want to get rid of the GX, it's a dinosaur. I have not driven the 2024 version, but would opt for the TX if I was looking for Lexus brand. Otherwise - BMW X7 if you need the space, best engine out there.