Noticed something odd about gas
01-14-17, 02:47 PM
#16
Most I've gotten is about 375 miles. Full tank drive from Los Angeles (North Glendale area) to Vegas on cruise control most of the time (about 270 mile drive) and driving around Vegas area for about 100 miles. So about 25 miles per gallon.
01-14-17, 06:04 PM
#17
Lexus Test Driver
I don't know if this 258 'miles remaining' figure is based on recently obtained mpg...and would change to [say] 435 'miles remaining' if the car had recently obtained 25 mpg on a highway trip - or if the 'remaining miles' always indicates 258. To be honest, I've never paid too much attention to the 'miles remaining' figure because I know if I drive in stop-n-go city traffic I'll usually get ~15-16 mpg (which is about 258 miles), but if I drive primarily on the highway I'll get 25+ mpg. So, just because the 'remaining miles' figure may indicate 258 miles, it does not necessarily mean that will be the mileage you'll get on the next tank full.
dchar says his 'remaining miles' indicates 285-305 miles after fill-ups, which reflects 16.4 to 17.5 mpg. Maybe someone who drives the majority of time on the highway and/or gets over 20 mpg could let us know what their 'remaining miles' indicates. That would likely confirm that the 'remaining miles' reflects the mpg the car has recently obtained. But, to define what "recently" really means, I suspect the 'remaining miles' is based on the average mpg the car has obtained over a defined period of time, and that defined period of time began when the data was last reset. Thus, I'm guessing that if you were to reset the data, fill-up with gas, and go on a lengthy 432 mile highway trip obtaining 27 mpg and using 16 gallons of gasoline - that when you filled-up again the 'remaining miles' would probably indicate a figure somewhere around 450-470 miles (17.4 gals x 26-27 mpg) unless there is a maximum figure set in the data parameters.
Last edited by bclexus; 01-14-17 at 06:08 PM.
01-14-17, 06:54 PM
#18
You know there is an easy way to track your gas mileage that involves no voodoo, doesn't rely on the car's computer to do it for, heck you don't even have to have a working gas gauge.
Go to the dollar store, buy a little spiral ring notebook, a small one that fits in the glove box. Write down the date, miles on the odometer, and gallons of gas that you bought. Do this every time you fill up. Do the math by hand. Don't trust that computer in the dash to tell you your gas mileage. I have a strong suspicion that the car makers use an elaborate line of code to give you the mpg number, which will be a bit better than your real world mpg number if you do the math by hand. Plus in this little spiral notebook you can log things like tire pressure, oil changes, and other routine maintenance. So if you forget the last time you changed the oil, just flip back a couple of pages and bam, there you go.
Go to the dollar store, buy a little spiral ring notebook, a small one that fits in the glove box. Write down the date, miles on the odometer, and gallons of gas that you bought. Do this every time you fill up. Do the math by hand. Don't trust that computer in the dash to tell you your gas mileage. I have a strong suspicion that the car makers use an elaborate line of code to give you the mpg number, which will be a bit better than your real world mpg number if you do the math by hand. Plus in this little spiral notebook you can log things like tire pressure, oil changes, and other routine maintenance. So if you forget the last time you changed the oil, just flip back a couple of pages and bam, there you go.
01-14-17, 07:09 PM
#19
Lexus Test Driver
You know there is an easy way to track your gas mileage that involves no voodoo, doesn't rely on the car's computer to do it for, heck you don't even have to have a working gas gauge.
Go to the dollar store, buy a little spiral ring notebook, a small one that fits in the glove box. Write down the date, miles on the odometer, and gallons of gas that you bought. Do this every time you fill up. Do the math by hand. Don't trust that computer in the dash to tell you your gas mileage. I have a strong suspicion that the car makers use an elaborate line of code to give you the mpg number, which will be a bit better than your real world mpg number if you do the math by hand. Plus in this little spiral notebook you can log things like tire pressure, oil changes, and other routine maintenance. So if you forget the last time you changed the oil, just flip back a couple of pages and bam, there you go.
Go to the dollar store, buy a little spiral ring notebook, a small one that fits in the glove box. Write down the date, miles on the odometer, and gallons of gas that you bought. Do this every time you fill up. Do the math by hand. Don't trust that computer in the dash to tell you your gas mileage. I have a strong suspicion that the car makers use an elaborate line of code to give you the mpg number, which will be a bit better than your real world mpg number if you do the math by hand. Plus in this little spiral notebook you can log things like tire pressure, oil changes, and other routine maintenance. So if you forget the last time you changed the oil, just flip back a couple of pages and bam, there you go.
01-14-17, 07:28 PM
#20
... have you tried calculating the mileage by hand? I mean in my previous vehicle it was never reflective of how much gas is actually in the tank. I could drive for 100 miles on the highway before it came down from the full mark.
01-14-17, 07:46 PM
#21
Lexus Test Driver
In the GS 350 I can usually travel about 60 miles in stop-n-go driving before the needle gets down to the full mark, and can travel nearly 100 miles on the highway before it gets to the full mark.
01-14-17, 07:52 PM
#22
That's always been the case with every vehicle I've owned if you fill it all the way up. But starting at about ¾ full the fuel needle always seems to move down quicker, and from ½ full the needle travels down quicker still.
In the GS 350 I can usually travel about 60 miles in stop-n-go driving before the needle gets down to the full mark, and can travel nearly 100 miles on the highway before it gets to the full mark.
In the GS 350 I can usually travel about 60 miles in stop-n-go driving before the needle gets down to the full mark, and can travel nearly 100 miles on the highway before it gets to the full mark.
01-14-17, 11:40 PM
#23
This, I had an old Cadillac, gas gauge was not very accurate. It took forever to drop down to 1/2 tank, but man it burned off that last 1/2 tank real quick. 1/4 tank meant you should probably fill the car up. Empty meant you were going to run out of gas in 40 miles or so. I did run that car out of gas on empty once, going downhill on the interstate it had plenty of pickup, got that sob up to 95mph going downhill, going uphill to the next exit, it stalled out on me, used that momentum to get me up to the top the exit ramp, wasn't a far walk to the gas station right around the corner.
01-15-17, 04:37 AM
#24
Intermediate
I filled up this morning from half a tank and noted my range was 369 mi after refuel. I would say 75%+ of my driving it highway though so I'm sure that plays into the calculation. I use Normal driving mode.
01-15-17, 07:14 AM
#25
Intermediate
01-15-17, 08:50 AM
#26
Lexus Champion
01-15-17, 09:23 AM
#27
Lexus Test Driver
I don't recall that I've ever reset my driving data...
01-15-17, 09:24 AM
#28
Lexus Test Driver
01-17-17, 08:27 AM
#30
When I fill up my gas tank to full, my range is somewhere in the 320-350 range...highest I got was maybe 360's. I recently started driving in normal mode as opposed to ECO, and don't see much difference in gas consumption. Plus I notice a lot more black soot on the rear end when driving in ECO, so I keep it in normal by default, and have noticed considerably less soot.