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Old 08-21-2008, 01:15 PM   #14 (permalink)
wagonman76
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Join Date: Jun 2008
Location: Northwest Lower Michigan
Posts: 1,006

Red Car - '89 Chevrolet Celebrity CL 4 door
Team Chevy
90 day: 36.47 mpg (US)

Winter Wagon - '89 Pontiac 6000 LE Wagon
90 day: 28.26 mpg (US)
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Quote:
Originally Posted by tasdrouille View Post
I have to disagree. Fuel is the often single biggest expense over the lifetime of a road vehicle, sometimes exceeding the purchase value of the vehicle itself. Diesel would have to cost a whole lot more than 16% over gasoline to offset FE benefits.

I own 2 compact sedans, one a gasser and the other a TDI, so it's easy for me to compare. I think it's a fair engine comparison, both being 4 cyl engines with pretty much the same displacement.

Doing the same type of driving with both my cars I get the following:

Highway only
TDI: 65 MPG
Elantra: 43 MPG

City only
TDI: 50 MPG
Elantra: 33 MPG

In a 50/50 city/highway mix and gas at $4/gal while diesel at $5/gal, a 25% difference, the TDI cost $1830 less per 100k miles than the Elantra.

The premium you pay for the diesel engine is partly transferred to the resale value so it's not a sunk cost.
I agree. A lot of us pay a lot more a month for fuel than what a car payment would be. Plus you pay the car off eventually, you never stop using fuel.

It cost more to fill the tank in my Pontiac 6000 wagon than what I paid for it.
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