2IS MPG Threads (MERGED master thread)
#122
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
From that I get a number that is always lower than what the average miles per tank tells me in the dash display.
So where are you guys getting your numbers from, especially you 350 owners. Have you tried calculating it out yourselves or are you just reading it off that display. Personally I am not convinced that dash calculation is correct...
So where are you guys getting your numbers from, especially you 350 owners. Have you tried calculating it out yourselves or are you just reading it off that display. Personally I am not convinced that dash calculation is correct...
For me, it's always been Actual > display, which is the way it should be because you could run out of gas if it was the other way around.
For you 350 owners, I have a HARD time believing that your Lifetime avg is >23 mpg ?!? I'm thinking that the meter has been reset at least once since taking delivery, or maybe you are talking about the Tank avg. I've never reset my Lifetime avg, it's at 22.0 and I've got apprx 13k on the clock of 75/25 SoCal freeway/city driving . . . (btw my actual calculated mileage is 22.5)
#126
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Since driving to raise that tank average number is an obsession of mine lately, I've been driving like your grandfather. I set my orange ring at 75MPH and back off when I see it. I've seen my orange RPM ring twice in my life... I coast to my stops, and try to anticipate freeway movement ahead to minimize stop and go patterns. I set my AC to the lowest fan speed, turning on the A/C only when I can't stand it anymore, and have it blow directly on me to maximize the effect. I know, I know, I don't deserve a IS350 for the way I drive, but I got a great deal on it and I like its potential...
All that, and I think I get an extra 2MPG out of the car. Probably not worth it in terms of the gas savings versus fun/sanity, but I'm challenged by that dash readout.
#127
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I think i would have to go on lots of long trips to raise my lifetime average, up from the 20.1 its at now. My commute is 20 miles and most of it is streets and or in traffic. Although it would be nice to try to wring every last tenth of a mile out of gas, its not worth it if you arent enjoying the ride.
#128
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I'm not as detailed as you but here is what I record manually...
Manual calculation is like 0.5 mpg lower than what the car shows. I know for a fact the car is showing 25.2mpg as lifetime.
#129
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Also, you are filling up pretty early. Seems like you can easily stretch it another 50 miles each time and still be perfectly safe...
#130
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I think for you guys, what you consider average and baby driving is probably still aggressive. Put it this way, are you still the person going the fastest when you're out there? If so, you are not babying the car or driving average.
Since driving to raise that tank average number is an obsession of mine lately, I've been driving like your grandfather. I set my orange ring at 75MPH and back off when I see it. I've seen my orange RPM ring twice in my life... I coast to my stops, and try to anticipate freeway movement ahead to minimize stop and go patterns. I set my AC to the lowest fan speed, turning on the A/C only when I can't stand it anymore, and have it blow directly on me to maximize the effect. I know, I know, I don't deserve a IS350 for the way I drive, but I got a great deal on it and I like its potential...
All that, and I think I get an extra 2MPG out of the car. Probably not worth it in terms of the gas savings versus fun/sanity, but I'm challenged by that dash readout.
Since driving to raise that tank average number is an obsession of mine lately, I've been driving like your grandfather. I set my orange ring at 75MPH and back off when I see it. I've seen my orange RPM ring twice in my life... I coast to my stops, and try to anticipate freeway movement ahead to minimize stop and go patterns. I set my AC to the lowest fan speed, turning on the A/C only when I can't stand it anymore, and have it blow directly on me to maximize the effect. I know, I know, I don't deserve a IS350 for the way I drive, but I got a great deal on it and I like its potential...
All that, and I think I get an extra 2MPG out of the car. Probably not worth it in terms of the gas savings versus fun/sanity, but I'm challenged by that dash readout.
The only thing I can attest to mpg being lower is the hot summer, as I use to average 22mpg. Today it was 19mpg. Also, I run dubs on my IS. So combat that I press harder on the gas at a green light and coast after that to attain cruise speed.
#131
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
I don't floor it. When I say baby, I mean that my gauge is always on "Current MPG" and if I'm not getting 30mpg, I'll ease off of the gas. On the highway, I'm in the right lane going around 57mph. I've been testing this for two months now and mpg has only gotten worse. I coast from light to light as well.
The only thing I can attest to mpg being lower is the hot summer, as I use to average 22mpg. Today it was 19mpg. Also, I run dubs on my IS. So combat that I press harder on the gas at a green light and coast after that to attain cruise speed.
The only thing I can attest to mpg being lower is the hot summer, as I use to average 22mpg. Today it was 19mpg. Also, I run dubs on my IS. So combat that I press harder on the gas at a green light and coast after that to attain cruise speed.
#132
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Couple of observations. It seems like after 10,000 miles, you are consistently in the 26MPG range, while you rarely topped that before. Did you do something different at the 10K service, or did your habits change?
Also, you are filling up pretty early. Seems like you can easily stretch it another 50 miles each time and still be perfectly safe...
Also, you are filling up pretty early. Seems like you can easily stretch it another 50 miles each time and still be perfectly safe...
![Stick Out Tongue](https://www.clublexus.com/forums/images/smilies/tongue.gif)
I always thought it was because the engine finally broke in... which i still think is true... I still rev it enough... I use 3/4 throttle quite often and up to 5,500 rpms but never FULL throttle as I never found the need... EXCEPT when I did a 1/4 mile drag... I did that when the car had ~5000 miles on it. HUmmmm now that the engine is really broken in I wonder if I can crack the sub 5 sec to 60.
![Big Grin](https://www.clublexus.com/forums/images/smilies/biggrin.gif)
Ya I usually can probably go another 30 to 50 miles before filling up but I dont like to run it down that low since my commute is 60 miles a day I dont want to push it that close... I dont want to be stranded on the freeway
![Thumb Up](https://www.clublexus.com/forums/images/smilies/thumbsup.gif)
EDIT: Oh Oh haha I changed jobs... I have a different commute. DUH... I have a further commute now. I think I changed job at around line 26... the 26.61434978 mpg line... I took out the dates of each fill up but in my own personal record xls file I have dates in column A
My consistent 26mpg started in Febuary... but I switched jobs a few months before then. So those couple of fill ups in between that were not 26mpg I have no explanation for. Winter blend? I only use 76 gas. I might have once filled up the car with Chevron before cuz I couldnt find a 76 but its always been solely 76 gas
Last edited by EBMCS03; 08-14-07 at 05:49 PM.
#133
Driver School Candidate
Join Date: Oct 2007
Location: NY
Posts: 3
Likes: 0
Received 0 Likes
on
0 Posts
![Default](https://www.clublexus.com/forums/images/icons/icon1.gif)
Looking for a new commuter...what are you guys getting on MPG for an MT 250? Also do you feel you have enough power for daily commuting duties? Passing power, etc?
Last edited by ckay; 10-24-07 at 09:51 AM.