Gas Mileage Calculations
09-02-03, 08:04 PM
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Gas Mileage Calculations
Hey guys,
I really never knew what type of mileage I could get. I always assumed 300 as that is what most people with our cars tell me.
The MPG includes the mods I have on my car, injen hi flo filter, rims, and magnaflow exhausts(no piping).
After calculating, my mileage which includes both highway/city driving comes out to 18.05. Which is basically 18 MPG. Which means I can get 380 miles on a full tank if I wanted to "red line the fuel gauge" haha .
Here is how I determined it. I topped off my car last week and our cars can hold 21.1 gallons. I am assuming that the car is probably only taking in a little under 21 gallons so it doesn't overfill.
With that in mind I am using 21.1 as what is in my tank when I top it off. Today I filled up 12.36 gallons. So 21.1 - 12.36 =8.74 mpg still in my tank when I was filling up(the fuel needle was just above the last line).
Basically before I filled up, I had driven 223.1 miles with 12.36 gallons. So dividing 223.1 by 12.36 yields 18.05 MPG. Thus giving me roughly 18 MPG and 380 on a full tank.
Are you guys getting similar mileage or more? With or without mods?
-Bryan
I really never knew what type of mileage I could get. I always assumed 300 as that is what most people with our cars tell me.
The MPG includes the mods I have on my car, injen hi flo filter, rims, and magnaflow exhausts(no piping).
After calculating, my mileage which includes both highway/city driving comes out to 18.05. Which is basically 18 MPG. Which means I can get 380 miles on a full tank if I wanted to "red line the fuel gauge" haha .
Here is how I determined it. I topped off my car last week and our cars can hold 21.1 gallons. I am assuming that the car is probably only taking in a little under 21 gallons so it doesn't overfill.
With that in mind I am using 21.1 as what is in my tank when I top it off. Today I filled up 12.36 gallons. So 21.1 - 12.36 =8.74 mpg still in my tank when I was filling up(the fuel needle was just above the last line).
Basically before I filled up, I had driven 223.1 miles with 12.36 gallons. So dividing 223.1 by 12.36 yields 18.05 MPG. Thus giving me roughly 18 MPG and 380 on a full tank.
Are you guys getting similar mileage or more? With or without mods?
-Bryan
09-02-03, 11:43 PM
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you must have driven a lot of freeway miles. i get about 16 miles a gallon, the only time i get more than 350 a tank is if i go all highway.
Last edited by Jmai22; 09-02-03 at 11:43 PM.
09-03-03, 09:59 PM
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Originally posted by Jmai22
you must have driven a lot of freeway miles. i get about 16 miles a gallon, the only time i get more than 350 a tank is if i go all highway.
you must have driven a lot of freeway miles. i get about 16 miles a gallon, the only time i get more than 350 a tank is if i go all highway.
09-04-03, 01:21 AM
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Originally posted by LexusAristo
I forgot, I don't use PWR mode. Just normal mode.
I forgot, I don't use PWR mode. Just normal mode.
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09-13-03, 10:42 PM
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hmm i drove like a regular person all week long and I got 12 mpg 
I will try again this week to make sure it wasn't an error..... If not any idea what could cause low gas mileage? I have a new fuel filter. Do you need to get valves adjusted on the gs3 every so often?
I will try again this week to make sure it wasn't an error..... If not any idea what could cause low gas mileage? I have a new fuel filter. Do you need to get valves adjusted on the gs3 every so often?
09-13-03, 11:07 PM
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I actually get decent gas mileage. I've traveled 450 miles on a tank of gas (5 freeway between LA & SF). Normally, I get 18-20 mpg on mixed freeway and street driving. I keep my tire pressures pretty hight (40psi front, 36 psi rear). I also clean my K&N during every oil change and use synthetic oil.
Last edited by LB Lex; 09-13-03 at 11:08 PM.
09-13-03, 11:32 PM
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Originally posted by 93LexoGS300
I actually get decent gas mileage. I've traveled 450 miles on a tank of gas (5 freeway between LA & SF). Normally, I get 18-20 mpg on mixed freeway and street driving. I keep my tire pressures pretty hight (40psi front, 36 psi rear). I also clean my K&N during every oil change and use synthetic oil.
I actually get decent gas mileage. I've traveled 450 miles on a tank of gas (5 freeway between LA & SF). Normally, I get 18-20 mpg on mixed freeway and street driving. I keep my tire pressures pretty hight (40psi front, 36 psi rear). I also clean my K&N during every oil change and use synthetic oil.
09-13-03, 11:56 PM
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I couldn't believe it myself, cruising at 80mph the engine just sips gas. I also try to take really good care of the engine. It has 186,000 miles now and it only uses half a quart between oil changes. It's been running really well until Thursday when it sprang a leak. There was a lot of oil leaking from the engine and it turns out that the seal on the oil pressure switch worn out and oil leaked. It's fixed now so I treated her to an oil change and filter cleaning
09-13-03, 11:59 PM
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I just filled my tank and got about 20.2mpg. (Most of the miles were Highway miles this time) When I'm driving on city streets (which is usually what I do), I get around 16-18 mpg. 