MPG Chart Update: June 2008
Categories: Cars
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Happy 4th of July, reader! I mentioned yesterday that I was trying to find something relative patriotic and American to write about for today. And what is more American these days than paying for gasoline?
Popular, But Time for an Update
The Automobile Gas Log and it’s associated MPG and price per gallon charts is one of the top set of posts that bring people to No Debt Plan from Google. In fact, if you search “mpg chart” the gas log article is the 6th result.
It’s been four months since I posted that article and I figured I could do an update to see if anything major has changed. Let’s take a look. (Click the images for full sized versions.)
MPG Down…
During the last four months my miles per gallon average has dropped about 2 miles per gallon versus my average for the entire time I’ve been tracking this data. We’ll see if this is significant in minute.
…and gas prices up 24%
Of course the most dramatic change over the last four months is the price at the pump. In my area gas has gone from $3.13 per gallon to $3.88 — a 24% increase. And it is still moving higher. If I couldn’t before, I can now definitely see why gas inflation is hurting the American economy and the average family out there.
Bad news everywhere, but a positive note
I also track how many gallons I buy each time I fill up. I haven’t put that into chart format as it is pretty consistent and the variation in the number of gallons isn’t important. I could buy twice in the same week if I saw a big drop in prices, or felt a huge increase was coming and just wanted to top off my tank.
However, if I compare March 10, 2008-July 3, 2008 to the previous year, there is a positive note to be added. I’ll count March 8, 2007 to July 5, 2007 as my comparable time period. During the 2008 period, I bought 128.739 gallons of gas. In the 2007 period, I bought 175.953! A decrease of 47.214 gallons of gas.
That’s a huge difference. At $4 per gallon, that equates to over $188. The only explanation I can provide for this change is we moved into our house in September of last year which cut my commute down. But I wouldn’t have guessed over four months I had saved that much gas.
Looking at the numbers it may look like I am buying a lot of gas (and spending a lot of money). I’ve also got to consider I do drive to work lunches. I wouldn’t say I drive a lot for my job, but when I do I get reimbursed for it. It may look like I’m buying a lot of gallons of gas, but when you net out the extra cost and the reimbursement, we only spend about $175 combined every month on gas.
But man, your MPG is dropping!
As I mentioned, compared to the average of all of my driving since I have been tracking this data (2002-present), my MPG for the last four months dropped over 2 mpg. That’s significant, right?
Well, it is significant. If it continued to drop I would start to really inspect the car (or have the mechanic do it at my next oil change). Tracking mpg for maintenance/safety concerns is the reason I started doing this tracking back in 2002. If your mpg drops significantly and your driving habits don’t change, you might have a problem.
In this case I am not as concerned. The MPG drop can be attributed to us not taking as many long interstate trips (high MPG time period). I do a lot of city driving — short commute to work, short trip to lunch with clients, short commute home. That’s my typical day. And I’ve dropped my total consumption of gallons by 47 thanks to the shorter commute.
What about you? Do you track your miles per gallon? Do you know how much you are spending on gas every month? Is your budget under a major squeeze due to gas prices, or are you handling it pretty well?









