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My 2005 GX gas mileage ~ 20 mpg!
Couple of weeks back I crossed 30K miles on my GX and did a 30K miles service at Totoya including changing diff, tran, brake fuilds etc. Then I calculated gas mileage not using trip computer but with pumped gas for given miles driven. To my shock, it showed 20.04 mpg!:). I am happy about it. Please note that I started using K&N drop engine filter around 10K miles earlier. Also, my driving habbit is 90% highway and 10% city. For the last 30K service, I changed regular Castrol to Sync-blend Castrol.
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If you drive alot of highway, 20 MPG is doable in the GX, its the city mileage that kills ya.
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Mileage may vary ...
Originally Posted by The G Man
(Post 3598976)
If you drive alot of highway, 20 MPG is doable in the GX, its the city mileage that kills ya.
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I've been doing about 60 hwy/40 city and getting about 17.5 mpg. Gas prices :(
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I think there is seriously something wrong with my gx. It seems like a lot of gx owners on here is averaging at least 16 in the city. I'm barely getting 14 in the city and around 16 hwy. I'm not a heavy footer either....I don't know whats the problem.
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Originally Posted by LexGX
(Post 3602816)
I think there is seriously something wrong with my gx. It seems like a lot of gx owners on here is averaging at least 16 in the city. I'm barely getting 14 in the city and around 16 hwy. I'm not a heavy footer either....I don't know whats the problem.
3rd row seat to minimized the weight. When needed, I can add that. I did see smoth acceleration (from stop) after switching to sync-blend. But, I am not sure how much it would contribute to increase in gas mileage. Before I added K&N filter, I did the calculation (a year back) and for similar driving condition, I got around 19 mpg. |
I always average 19.9 to 20.1 on my GX...went on a trip yesterday with the car fully loaded..five people and all the gear (plus the third row hanging back there) went between 60-70 mph and got exactly 20...I accelerate very slowly and take cruise off for the hills and let the car slow down a little bit. I also have 305/40/22 tires and heavy chrome wheels!
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Maybe i'm doing some of my calculations wrong but i will do it again when i'm going on a trip. I think its time for me to recharge my k&n filter also. I know that all synthetic oil is the same but i recently switched from mobile1 to castrol synthetic cause i had a couple of bottles laying around.
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LexGX, I use to get about 14 MPG too when I drive all city, its not unreasonable if you do a lot of stop and go, but 16 MPG on the highway is way too low. I use to drive around 75 MPH on the highway with 3 passengers and trunk full of lugguge and I still get sround 18 MPG. Maybe its time to change your K&N filter, there is nothing worst than dirty K&N filter. Those things plug up like a brick when they are dirty.
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I'm going back to school soon and its about a 200 something mile trip and i'll calculate by hand to see if it improves or if it was all in my imagination. I'll be recharging my filter this week when i wash my car again.
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I'm on a personal mission to see the maximum gas mileage I can achieve in my wife's new (pre-owned) CPO 2005 gx470.
Will a k&n filter make a significant increase in the mileage? Are you guys achieving near 20 mpg using premium gas or a lower octane? Is your AC on when driving the majority of the time? What other tips do you have to increase the mileage? |
Originally Posted by The G Man
(Post 3607721)
Lebut 16 MPG on the highway is way too low. I use to drive around 75 MPH on the highway with 3 passengers and trunk full of lugguge and I still get sround 18 MPG.
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Originally Posted by jdlynch
(Post 3608929)
I'm on a personal mission to see the maximum gas mileage I can achieve in my wife's new (pre-owned) CPO 2005 gx470.
Will a k&n filter make a significant increase in the mileage? <NO. Only a placebo effect in the owner's mind. :) > Are you guys achieving near 20 mpg using premium gas or a lower octane? <My trip/mileage computer says ~19.5 MPG on an average speed of ~32 MPH combined city/highway driving. I use 87 octane. However, my computer shows ~1.5 MPG optimistic compared to calculating the old-fashioned gallons/miles way, so I'm closer to an 18 MPG average. I've checked it on ~15 tanks full using both 93 and 87 octane to see if there was a difference (no stastically significant difference).> Is your AC on when driving the majority of the time? <Yes.> What other tips do you have to increase the mileage? <Drive very moderately in terms of acceleration, and keep the speed between 45 and 65 if you can (and even under 60 for best mileage).> All that said, my fuel computer seems to have gone waay optimistic lately -- I was driving it several miles yesterday on a flat coastal road at 58 MPH and it was showing 30-34 MPG constantly. I do NOT believe it's getting anywhere close to that actual mileage. LOL |
Thanks Turbo;
I too have noticed that the trip computer can be VERY optomistic. The average mpg it calculates never changes from 15.5 mpg; which seems lower than actual. David |
Originally Posted by jdlynch
(Post 3611730)
The average mpg it calculates never changes from 15.5 mpg; which seems lower than actual.
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