GX550 Real World MPG (4 Viewers)

[Angelitopstar27]

Hmmm 20 mpg and bone stock.. I never get better than 17 .. and I’m not a lead foot on the GX…

Another factor - are people who get 20+ MPG driving alone or is the car loaded with people / luggage etc?

There must be something that kicks up the mileage of a subset of GX owners… you can only be so light on the gas..

You are missing a variable, his driving speed.

 

[jpto]

It’s an off shoot of that post (the one I started on “best drive modes” ) … I didn’t check our Panamanian friends calculations… but it sparked an argument for “an octane factor”…

I’m interested in finding a local spot that sells higher octane fuel than Costco (91) and seeing if there isn’t an incremental increase in mileage. JUST curious …. I wonder when Toyota or any manufacturer for that matter posts their fuel consumption on any particular car - what fuel they utilize.

I don’t think ANY of us have gotten 21 mpg out GX’s vehicles.. which means one of 2-3 things:

1. They are using high octane “super fuel”..

2. They are operating with vehicles with lowest weight appointments and optimum conditions, in eco etc.

OR

3. They are prevaricating ….

Have a great day all… fun to connect with a worldwide community of GX owners over a common interest.

EM.

I can reliably get 10-11L/100km, 21-23MPG with summer fuel & highway driving (calculated by hand). My wheel/tire setup is lighter than stock - saving 14 pounds a corner with forged wheels, running Toyo OC AT3 SL @ 35 psi stock size 265/70r18. I generally fill up with Costco 91.

The biggest factor for fuel economy with GX550 is speed. After getting past forty with young kids I generally drive around the speed limit (in the right lane faster than 18 wheelers), usually under 120 kph/74 mph. Anything past 115 kph/70mph and fuel economy starts dropping fast.

City fuel economy sucks, nothing can improve that.

 

[Texman]

Hmmm 20 mpg and bone stock.. I never get better than 17 .. and I’m not a lead foot on the GX…

Another factor - are people who get 20+ MPG driving alone or is the car loaded with people / luggage etc?

There must be something that kicks up the mileage of a subset of GX owners… you can only be so light on the gas..

just me usually to/from work mostly flat I-40 63 mph 36psi tires it has actually improved over time. I am a very passive driver on start / stops. roof rack removed.

 

[Edward]

I thought it might be helpful to have some real world reports of fuel mileage on the new GX.


What’s your general mix of city/highway/offroad?

I have a 2026 Premium+ and I'm averaging 20 combined and 22.4 highway

 

[cmfhsu]

Hmmm 20 mpg and bone stock.. I never get better than 17 .. and I’m not a lead foot on the GX…

Another factor - are people who get 20+ MPG driving alone or is the car loaded with people / luggage etc?

There must be something that kicks up the mileage of a subset of GX owners… you can only be so light on the gas..

I have been able to average 21mpg once, just after I purchased the car, on a weekend trip where nearly all of the driving was on 55mph roads with almost no stoplights or turns. I think this car has an extreme sweet spot between 40-60mph where the speeds are high enough to cruise steadily, but low enough to avoid the excess drag & turbo usage.

Now, most of my driving is either around town or on the highway at 75+mph (or towing), so my mileage hovers around 17-18.

 

[Garauld]

I got 6700 on my '25 OT. Just got back from having a couple beers with my hockey buds last night. 13 mi from the bar to home running approx. 25% town and 75% highway at 60-65. 22.3 mpg. I can't complain.