How do YOU calculate your MPG
#1
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How do YOU calculate your MPG
so i did a search on calculations of MPG on the board and did not find anything in terms of a formula...
How do YOU calculate your miles per gallon?
My method:
1) Fill up with 91 Premium
2) Reset Trip Odometer to 0
3) Drive till my yellow light comes on
4) Repeat item 1
5) Divide Number of Miles Driven Indicated on my Trip Odometer by the Number of Gallons filled into the gas tank
ANY OTHER METHODS ? ? ?
thanks
jimbo
How do YOU calculate your miles per gallon?
My method:
1) Fill up with 91 Premium
2) Reset Trip Odometer to 0
3) Drive till my yellow light comes on
4) Repeat item 1
5) Divide Number of Miles Driven Indicated on my Trip Odometer by the Number of Gallons filled into the gas tank
ANY OTHER METHODS ? ? ?
thanks
jimbo
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come on -- i'm sure there's more than one way to skin a cat!
at least i'd like to see if anyone has been doing the MPG thing with some interesting methods for entertainments sake...
at least i'd like to see if anyone has been doing the MPG thing with some interesting methods for entertainments sake...
#5
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The most accurate way is to continue to add miles and gallons over three to four tankfuls. There is too much variation in the shut off valves at the pump, and too much variation in driving styles, weather, etc. to get a good reading on one tank.
1. Start with a full tank
2. Set odometer to 0
3. Drive 'til your refill point
4. Fill it up
5. Record the gallons
6. Repeat steps 3,4,and 5 a couple of times while letting your odometer add up all the miles.
7. Fill up a final time, add those gallons to your overall total, then divide the odometer reading by the total gallons.
1. Start with a full tank
2. Set odometer to 0
3. Drive 'til your refill point
4. Fill it up
5. Record the gallons
6. Repeat steps 3,4,and 5 a couple of times while letting your odometer add up all the miles.
7. Fill up a final time, add those gallons to your overall total, then divide the odometer reading by the total gallons.
#6
I just got out of my lease on a Ford Excursion (Triton V10), so measuring MPG became an obsession.
The best way IMO, as mentioned here is NOT to use your fuel light or guage.
Do the following.
1. Fill tank to full with no topping off.
2. run as many miles as you like (the greater the miles the less error in calc.
3. at next fill up record miles run (example 200 miles)
4. record amount of gallons required to fill tank (example 10.8)
5. reset trip meter and repeat steps 1-5 again
In this example the first fill up: 200 miles requiring 10.8 gallons to replinish equates to 18.5MPG.
Your accuracy increases by adhearing to the following:
1. use the same pump at the same station.
2. do not top off the tank.
Measurement error will decrease by law of averages by repeating the measurement over many fill-ups.
I also make a comment on my logs as to type of driving, ave temp or any exceptionals e. g. oil changed.
The best way IMO, as mentioned here is NOT to use your fuel light or guage.
Do the following.
1. Fill tank to full with no topping off.
2. run as many miles as you like (the greater the miles the less error in calc.
3. at next fill up record miles run (example 200 miles)
4. record amount of gallons required to fill tank (example 10.8)
5. reset trip meter and repeat steps 1-5 again
In this example the first fill up: 200 miles requiring 10.8 gallons to replinish equates to 18.5MPG.
Your accuracy increases by adhearing to the following:
1. use the same pump at the same station.
2. do not top off the tank.
Measurement error will decrease by law of averages by repeating the measurement over many fill-ups.
I also make a comment on my logs as to type of driving, ave temp or any exceptionals e. g. oil changed.
#8
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Originally posted by jimbo_gixxer
come on -- i'm sure there's more than one way to skin a cat!
come on -- i'm sure there's more than one way to skin a cat!
Regards,
Gordon
#10
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I was reading mx6.com forums and one guy was concerned over his gas mileage so he calculated his mileage by:
"I also researched on how much mpg i get. I waited until my car ran out of gas, then filled it up with 1 gallon. Now www.fueleconomy.gov said i should get about 19-21 MPG, it burnt off at about 16 miles............ "
1. Running his car till it conks out!
2. Fill with ONE gallon.
3. Resets trip odo.
4. Drive till it conks out again!
5. Reads miles driven!
How could it be any easier! What some people (read numbskulls) will do to avoid that tricky division...
"I also researched on how much mpg i get. I waited until my car ran out of gas, then filled it up with 1 gallon. Now www.fueleconomy.gov said i should get about 19-21 MPG, it burnt off at about 16 miles............ "
1. Running his car till it conks out!
2. Fill with ONE gallon.
3. Resets trip odo.
4. Drive till it conks out again!
5. Reads miles driven!
How could it be any easier! What some people (read numbskulls) will do to avoid that tricky division...
#13
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I use this with my Zaurus: :D
http://www.killefiz.de/zaurus/showdetail.php?app=941
Also track other maintenance with it (oil changes, tire rotation, etc)
--SL01
http://www.killefiz.de/zaurus/showdetail.php?app=941
Also track other maintenance with it (oil changes, tire rotation, etc)
--SL01
#14
$1.97 for a gal of exxon premium where i live, was at 2 bucks for a while then went to 198 now 197.
anyway, what i like to do is divide my miles by my gallons:D
________
RHODE ISLAND MEDICAL MARIJUANA DISPENSARIES
anyway, what i like to do is divide my miles by my gallons:D
________
RHODE ISLAND MEDICAL MARIJUANA DISPENSARIES
Last edited by P00Man; 04-16-2011 at 08:31 PM.
#16
Originally posted by rex
I did my first long (250 miles) highway trip last night and I noticed that like most cars the gas gauge is non-linear. Before I go out and measure, does anyone know what 3/4, 1/2 and 1/4 on the gauge relate to in terms of actual fuel tank contents?
I did my first long (250 miles) highway trip last night and I noticed that like most cars the gas gauge is non-linear. Before I go out and measure, does anyone know what 3/4, 1/2 and 1/4 on the gauge relate to in terms of actual fuel tank contents?
Alternatively, the same data might be available through the OBDII diagnostic port under the dash; someone with a reader might be able to work up a mapping.
HTH!
#18
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ok i learned two things from this thread...
1) i should look at the average MPG over a number of tanks (ie 3-4 fillups) instead of the PER Tank MPG
2) some people have spent way too much time tracking their MPG. as far as i'm concerned, as long as i get from Point A to POint B with the big grin on my face from being in my RX-8 i don't really give a rat's a$$ what i'm getting in terms of MPG. if i really wanted a fuel efficient car i'd be in a Toyota Prius or Echo...
1) i should look at the average MPG over a number of tanks (ie 3-4 fillups) instead of the PER Tank MPG
2) some people have spent way too much time tracking their MPG. as far as i'm concerned, as long as i get from Point A to POint B with the big grin on my face from being in my RX-8 i don't really give a rat's a$$ what i'm getting in terms of MPG. if i really wanted a fuel efficient car i'd be in a Toyota Prius or Echo...
#19
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Originally posted by jimbo_gixxer
some people have spent way too much time tracking their MPG. as far as i'm concerned, as long as i get from Point A to POint B with the big grin on my face from being in my RX-8 i don't really give a rat's a$$ what i'm getting in terms of MPG. if i really wanted a fuel efficient car i'd be in a Toyota Prius or Echo...
some people have spent way too much time tracking their MPG. as far as i'm concerned, as long as i get from Point A to POint B with the big grin on my face from being in my RX-8 i don't really give a rat's a$$ what i'm getting in terms of MPG. if i really wanted a fuel efficient car i'd be in a Toyota Prius or Echo...
#20
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Originally posted by jdl
I do all my calcs this way
I do all my calcs this way
back to the point, FWIW, i do a per tank average for my car, and I just keep a mental note of the trend... my mx-6 v6 gets averages b/n 26 and 26.5 mpg. now the weather's cooling down and my AC is off (more often), I just got 27 mpg. man, the RX-8 mpg is gonna hurt me.
#22
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Originally posted by med_mx6
... my mx-6 v6 gets averages b/n 26 and 26.5 mpg. now the weather's cooling down and my AC is off (more often), I just got 27 mpg. man, the RX-8 mpg is gonna hurt me.
... my mx-6 v6 gets averages b/n 26 and 26.5 mpg. now the weather's cooling down and my AC is off (more often), I just got 27 mpg. man, the RX-8 mpg is gonna hurt me.
I'm also getting bang on 26mpg this side of the pond, no aircon on mine.
Its the worlds smallest V6 at 1.8l but also one of the sweetest, loves to rev up to the 7500rpm limiter, great handler, pretty practical, can just about get two adults in the back when needed, and good amount of luggage space. So the RX8 was the only replacement for me.
Cheers
---Dave
#23
Originally posted by rex
I did my first long (250 miles) highway trip last night and I noticed that like most cars the gas gauge is non-linear. Before I go out and measure, does anyone know what 3/4, 1/2 and 1/4 on the gauge relate to in terms of actual fuel tank contents?
I did my first long (250 miles) highway trip last night and I noticed that like most cars the gas gauge is non-linear. Before I go out and measure, does anyone know what 3/4, 1/2 and 1/4 on the gauge relate to in terms of actual fuel tank contents?
#24
Prodigal Wankler
I use Highway Manager on my Visor Prism. It allows me to track gas and servicing expenses, and tracks MPG per tank, by category (city/highway/sport/etc) and overall:
It will also graph the MPG (green line is the average):
For our international friends, it will also do metric units, including l/100km.
It will also graph the MPG (green line is the average):
For our international friends, it will also do metric units, including l/100km.
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