Originally posted by: Xyclone
I filled the other day, and my truck is definitely a gas guzzler. It was a hand me down (I wanted a small car), and my parents pay for the gas, so I try to drive as conservatively as possible (don't like to waste their money). Even at 17 mpg combined, it's a gas guzzler IMO. My potential new car, a 2008-9 MINI Cooper S should get 27 mpg combined (23 city/32 highway), with the new ratings. I pity people stupid enough to buy new SUV's.
But taking into account your new car payments, how long will it take to realize any savings from your increased gas mileage.
Granted, buying a new car, if a necessity, is a way to increase your fuel mileage and decrease your fuel costs, but to JUST buy a new car to accomplish that is pretty much foolish.
Consider this scenario:
Driver X drives 15K miles annually
Driver X's vehicle averages 18mpg overall....and is paid for.
Driver X is looking at a new car that averages 30mpg overall.....and will cost him $300/mo in payments for 4 years. (I know, absurdly low for new car payments, but just a starting point.)
So, new vehicle gets around 66% better average mileage than the old vehicle.
And we have annual fuel costs that look like this:
Old car----15K miles per year / 18mpg X $5 gal of gas = $4185 per year fuel cost
New car---15K miles per year / 30mpg X $5 gal of gas = $2500 per year fuel cost
That's a savings of $1685 per year in fuel costs....damned good!!!
BUT......even at $5 per gallon gas, the car payments begin to outpace the savings in gas in 5 months and a week. The other 6 months and 3 weeks of the year, the new car is costing him more overall from his payments. Of course, this does NOT include the increase in insurance payments Driver X will face with buying a new car.
And that's at $5/gal prices. At the current $4/gal, the time to get behind with the payments vs. fuel savings drops to under 5 months. It'd take $12/gal of gas to instantly be saving in fuel despite picking up car payments. And even if Driver X keeps the car beyond his 4 years of payments, it'd take another 2 years of driving to finally equal what he'd have spent on gas with his old car.......6 years to break even after buying that new car to save gas.
From a purely economic point, it'd almost be unwise to buy a new car just to save on fuel costs. On the other hand, if one is already looking to purchase a new vehicle anyway, such as your old vehicle is too trouble prone to continue owning it, then a higher mileage vehicle makes sense.
The above does not include purchasing a hybrid....the premium one must pay to purchase a hybrid will make the payments much more than $300/mo. for 4 years......but the gas mileage increase may offset that a little......but probably not enough to justify simply buying one just to get better gas mileage.