Best way to calculate true cost/mile driven???

Caveman

Platinum Member
Nov 18, 1999
2,537
34
91
I've heard everything from 60 cents to $3/mile depending on car and calculation. Anyone have a website/advice, etc that they trust for it's method???
 

Zenmervolt

Elite member
Oct 22, 2000
24,514
36
91
(Purchase Price + all maintenance and repair costs + gasoline - resale vaule) / miles driven

It's always going to vary individually for every car. The current reimbursement rate is 50.5 cents/mile per the IRS. Most cars will fall somewhere around there.

ZV
 

Ksyder

Golden Member
Feb 14, 2006
1,829
1
81
If you are just trying to calculate gas mileage heres how to do it:

1. Fill up tank.
2. Drive some amount of miles, it doesn't matter, but i'd try to use a couple of gallons of gas and do your normal type of driving, perhaps a mix of city and highway.
3. Fill up tank again. Make note of how many miles you just drove and how many gallons you filled up with.
4. Divide amount of miles driven by gallons used since last fill up. For example, say you drove 60 miles and the second time you filled up it took 2 gallons that gives you an avg mileage of 30mpg.

I don't know if this is exactly what you are after but this is the best way I know of to calculate actual fuel economy. You should be able to then take these numbers and figure out the cost/mile.

If you are trying to figure out cost/mile including all costs (insurance, gas, tires, repairs, maintenance, interest, etc it would be best I would think to do this on a yearly basis. You'd have to take all of your costs associated with driving that car for a specific period of time and divide that number by the amount of miles driven. I would think a quarterly or yearly basis would be good since insurance, car payments, etc are paid in amounts that are easy to figure out the yearly cost of.
 

iamwiz82

Lifer
Jan 10, 2001
30,772
13
81
Originally posted by: Zenmervolt
(Purchase Price + all maintenance and repair costs + gasoline - resale vaule) / miles driven

It's always going to vary individually for every car. The current reimbursement rate is 50.5 cents/mile per the IRS. Most cars will fall somewhere around there.

ZV

They actually upped it to 58.5 cents per mile for the second half of 2008.

http://www.irs.gov/newsroom/ar...e/0,,id=184163,00.html
 

thomsbrain

Lifer
Dec 4, 2001
18,148
1
0
Originally posted by: iamwiz82
Originally posted by: Zenmervolt
(Purchase Price + all maintenance and repair costs + gasoline - resale vaule) / miles driven

It's always going to vary individually for every car. The current reimbursement rate is 50.5 cents/mile per the IRS. Most cars will fall somewhere around there.

ZV

They actually upped it to 58.5 cents per mile for the second half of 2008.

http://www.irs.gov/newsroom/ar...e/0,,id=184163,00.html

Beat me to it. It's still low, IMO, and I drive a car that gets good mileage. I feel bad for folks who need trucks or vans to do their jobs.
 

Toastedlightly

Diamond Member
Aug 7, 2004
7,213
6
81
Originally posted by: thomsbrain
Originally posted by: iamwiz82
Originally posted by: Zenmervolt
(Purchase Price + all maintenance and repair costs + gasoline - resale vaule) / miles driven

It's always going to vary individually for every car. The current reimbursement rate is 50.5 cents/mile per the IRS. Most cars will fall somewhere around there.

ZV

They actually upped it to 58.5 cents per mile for the second half of 2008.

http://www.irs.gov/newsroom/ar...e/0,,id=184163,00.html

Beat me to it. It's still low, IMO, and I drive a car that gets good mileage. I feel bad for folks who need trucks or vans to do their jobs.

I did work when it was 50.5c/mi. I drove my car for company reasons and I was reimbursed at that rate. I ended up making (after gas) 500 bucks. I paid 400 for the car. Win!
 

RU482

Lifer
Apr 9, 2000
12,689
3
81
(Avg cost of maintenance/mile + Avg cost of fuel/mile + Avg cost of insurance/mile + Avg depreciation/mile) = 58.5c/mile (currently)