How do you tell your MPG?

[Stevo_Echohb05]

Originally Posted by mikered30

^^ Are you talking about the charcoal canister? If so it is potentially harmful to force more fuel into the tank as it can flow into the charcoal canister and is quite costly to replace.

If you fill your gas to the top of the filler neck (where you put the gas in) you risk flooding your charcoal canister with gas ($365CDN +labor +tax) via the breather tube.

[Ken07TCH]

Definitely will flood the charcoal can if you fill the neck up. I use the same pump at the same station as often as possible and let it turn off at the first click. Hand calc becomes more accurate with each fill up.

[2win2rbo]

I use ecomodder.com to track my fuel usage. The user garage uses a fuel log to track down lifetime and 90 day mpg average. It's pretty accurate and addictive.

[PhatRoyale]

I used to calculate it manually, wish I had kept old receipts of running mileage for longer.

I just started recently on spritmonitor. Nice and no frills, just the way I like it.

[SuperchargedMR2]

Another TN member got me hooked on Fuelly.com & I will say it's very addictive.

[Exitium]

Originally Posted by Christian87N

Do what I do. Next time you fill up, clear out your trip a or b. I use a for fuel and b for oil. When you go refuel, divide the number of miles by the number of gallons, and that will be a pretty good indication of how much your making per tank. Good way to tell if your car is drinking up more fuel, or if you have low air pressure in your tires. It makes a noticeable difference.

I do the same thing handy little gadgets those trip meters are great minds....

[hawkman71]

I use a free app called "Gas Cubby" on my iPod Touch. It allows me to enter the pertinent information such as odometer reading, gallons, price/gallon, and/or total cost. (It will calculate the other one, if you give it two of those variables). You also have to enter if it's a total or partial fill. I can also enter any service I do to it, and it iwll remind me to change my oil every XXX miles (whatever I tell it, I think).

It then calculates my last tank's mileage. If i tip it to the side, it shows a graph of my fuel mileage. Slide that to the left, and I get a table of overall mileage, max, min, average cost/gallon, cost/mile to run the car (9 cents), etc.

It's a free app, I think.