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13-14 mpg

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Old 08-04-2008 | 02:51 PM
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Default 13-14 mpg

Yes that's what I'm averaging, driving a mix of back roads, stoplights and highways on my way to work each day. This morning I put 15 gallons in the tank with exactly 200 miles on the trip odometer, so the mileage officially sucks. So what? I just wish I had a bigger tank. I had this argument with a co-worker that my old sports car was much cheaper to drive than a brand new Prius and I think I won, even looking at cash flow vs. bottom line. He's got a payment I don't have which completely blows away his 45mpg savings at the pump. When you factor insurance and depreciation, those more than offset my maintenance costs (which have really been minor considering I do my own work). So even though it costs me $60 every 200 miles, I still come out ahead. Oh yeah and my carbon footprint is much smaller because even though my emissions are worse (but still excellent), I didn't go buy some disposable crapcan that sucked down 4 times the resources to build and will eat space in a landfill while my car is still cruising the highways.

928 rocks!
Old 08-04-2008 | 03:03 PM
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If you haven't already seen this Mark....check this out, it's great!! http://www.youtube.com/watch?v=0o63BOVlzhc Too bad they used a bmw but I think the idea comes across just perfect!

Originally Posted by shmark
Yes that's what I'm averaging, driving a mix of back roads, stoplights and highways on my way to work each day. This morning I put 15 gallons in the tank with exactly 200 miles on the trip odometer, so the mileage officially sucks. So what? I just wish I had a bigger tank. I had this argument with a co-worker that my old sports car was much cheaper to drive than a brand new Prius and I think I won, even looking at cash flow vs. bottom line. He's got a payment I don't have which completely blows away his 45mpg savings at the pump. When you factor insurance and depreciation, those more than offset my maintenance costs (which have really been minor considering I do my own work). So even though it costs me $60 every 200 miles, I still come out ahead. Oh yeah and my carbon footprint is much smaller because even though my emissions are worse (but still excellent), I didn't go buy some disposable crapcan that sucked down 4 times the resources to build and will eat space in a landfill while my car is still cruising the highways.

928 rocks!

Last edited by Skiviking; 08-04-2008 at 03:04 PM. Reason: forgot to put in link!
Old 08-04-2008 | 03:21 PM
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Originally Posted by Skiviking
If you haven't already seen this Mark....check this out, it's great!! http://www.youtube.com/watch?v=0o63BOVlzhc Too bad they used a bmw but I think the idea comes across just perfect!
GREAT TOP GEAR CLIP!
Old 08-04-2008 | 03:50 PM
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I think you would get better milage with different wheels. I'll give you $250 for the set.
Old 08-04-2008 | 05:32 PM
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Try keeping your average speed below 90 mph, does wonders for mileage ;-)
Old 08-04-2008 | 05:33 PM
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I get 10MPG.
Old 08-04-2008 | 06:20 PM
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Actually, I just got 22mpg on a 300 mile highway trip (I bet I could get 24/25 with the 2.2 5th gear though, damn that 2.7 GT R/P). But I usually get around 15mpg in the city.

Dan
'91 928GT S/C
Old 08-04-2008 | 06:29 PM
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In the '81;
City driving is 15-16 mpg.
Highway driving is, 21-22 mpg.

Cheers,
Old 08-04-2008 | 07:18 PM
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Originally Posted by bigmac
I think you would get better milage with different wheels. I'll give you $250 for the set.
I want your wheels. I'll give you the $250 to use to buy the other wheels if you'll give me your wheels in exchange. Well....OK.... what DO you want for your wheels?

Tom:
You're right about the mileage improving under 90. I can get 22 without much effort if I stay under 100. But what a drag! May as well buy a Prius. And I have a 2.2 rear end.
Old 08-04-2008 | 07:30 PM
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gotta admit, after seeing "Extreme Factories" on Discovery last night - those aluminum framed Z06 Vettes w/fact. dry sump and hand built 505 hp motors are looking pretty good all of a sudden. 3.7sec 0-60 aint' shabby w/a full fact. warrenty. and 1.2G's on the skid pad, 6 spd trans and huge 6 piston front brakes make it a pretty potent (albiet ugly) plastic clonemobile.

25mpg highway too!! could just paint a shark on the side and hang a sharktooth from the mirror, lol... maybe I'll come to my senses when my trans is done right, maybe.
Old 08-04-2008 | 07:56 PM
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Originally Posted by dprantl
Actually, I just got 22mpg on a 300 mile highway trip (I bet I could get 24/25 with the 2.2 5th gear though, damn that 2.7 GT R/P). But I usually get around 15mpg in the city.
Definitely, I get 25 highway no problem with the 2.20 and maybe 19 highway with the GT(S) 2.73.
Old 08-04-2008 | 08:14 PM
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Originally Posted by 928SS
......... (albiet ugly) plastic clonemobile.
Now that IS the truth, in my not so humble opinion.
Old 08-04-2008 | 09:14 PM
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Originally Posted by bigmac
I think you would get better milage with different wheels. I'll give you $250 for the set.
Actually I think it has gotten worse since I put the wheels on, 200 miles is my worst tank yet. Usually it's more like 230-240 miles. Ok you can have them, but I'll have to apply a gas guzzler tax...how about $5k?
Old 08-04-2008 | 09:18 PM
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Originally Posted by Tom in Austin
Try keeping your average speed below 90 mph, does wonders for mileage ;-)
Yep but what fun is that? I think I got around 20mpg on the trip to SITM, but stop and go traffic definitely has its toll on the mileage to work and home. Luckily there are a few open stretches every day where I can actually get into 5th....
Old 08-04-2008 | 11:04 PM
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Mark, What air pressures are you running??

Mac


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