Goodbye modifications!
Thread Starter
Melting Slicks
Joined: Nov 2007
Posts: 3,475
Likes: 10
From: Wake Forest NC
Goodbye modifications!
By now you've heard that revised CAFE standards require automakers to raise the average mileage of their car and truck fleets to 35 mpg by 2020.
Just hope the feds don't try to enforce post-sale gas mileage requirements some day!
Imagine some time in the future when you go in for an emissions test, your car sits on a dyno and they run a test to determine MPG. Let's say the fed new car requirement is 35 MPG and the mandated post-sale requirement is 18 MPG.
Will your modded 'Vette still pass?
s'noJob
Just hope the feds don't try to enforce post-sale gas mileage requirements some day!
Imagine some time in the future when you go in for an emissions test, your car sits on a dyno and they run a test to determine MPG. Let's say the fed new car requirement is 35 MPG and the mandated post-sale requirement is 18 MPG.
Will your modded 'Vette still pass?
s'noJob
Racer
Joined: Jul 2007
Posts: 440
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From: Orange CA
St. Jude Donor '10
If ya stop and think for a second ... saying your theory were to come true, by the time the feds got rid of all the SUV's and real gas hogs, the vettes would probably qualitfy for the diamond lane stickers at 25+ MPG I get 28 MPG cruisng at 75-80 ... everytime I go up to see my kids 350 miles away...
By the way I can only get 18-20 with my S10 (V6) so I guess that would be out too
By the way I can only get 18-20 with my S10 (V6) so I guess that would be out too
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Drifting
Joined: Mar 2005
Posts: 1,336
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From: North Canton OH
You do pose an interesting question. I highly doubt they will allow a 0-5 year old car drop that much if they do decide to measure it. I can see a 10 year old or more requirement dropping to almost 1/2 but not something nearly new.
I really hope they don't measure it, what percent of the average pop mods their cars anyway?
Also we could probably have some crazy "MPG" tune ready to load that totally robs power and limits RPM to something stupid like 2000RPM and forces a skip shift from 1-6th, ready and waiting to load up just before you take it in to have it tested.
I really hope they don't measure it, what percent of the average pop mods their cars anyway?
Also we could probably have some crazy "MPG" tune ready to load that totally robs power and limits RPM to something stupid like 2000RPM and forces a skip shift from 1-6th, ready and waiting to load up just before you take it in to have it tested.
The Vette has the best MPG rating of any of the 4 cars that we own.
Tech Contributor
Joined: Dec 2003
Posts: 19,384
Likes: 87
From: Horncastle Lincolnshire, England
2023 C5 of the Year Finalist - Unmodified
It would be impossible to set limits like that for older cars. It could never work. they'd have to set the limit for all new cars after a certain date which would only affect the C7 or the C8.
So if 18 mpg was a highway figure at a set speed most should pass.
So if 18 mpg was a highway figure at a set speed most should pass.
Safety Car
Joined: Jul 2007
Posts: 4,333
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From: Louisville Kentucky
____________________________________
My foot.
Last edited by Junkman2008; Feb 15, 2008 at 02:26 AM.
Melting Slicks
Joined: Oct 2006
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From: Los Angeles
Burning Brakes
Joined: May 2007
Posts: 817
Likes: 1
From: Killeen Texas
In 2020, my vette will almost be an antique! Which means that I will just dance my way past emissions testing like Ive done with my 82 F-150 for the past couple of years. That thing only passes emissions with a lot of "help"... 
Le Mans Master
Joined: Nov 2006
Posts: 7,021
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From: enterprise al
St. Jude Donor '08
i'm not the slightest bit concerned.. alabama will be the last state to go completely green, and when it does, we'll all have implanted microchips and we'll all be so dumbed down that the corvette will be the last thing on our minds...
Safety Car
Joined: Jun 2007
Posts: 4,050
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From: Los Angeles CA
Well they can't make older cars pass that test. Over half of the domestic vehicles probably wouldn't pass that right now. If you car only gets 20-30 mpg stock right now it's not going to magically get 35 mpg when they pass that law. So I don't think we (the C5's) will have to worry too much about that. But the C7 or C8 will probably get hit by it.
Thread Starter
Melting Slicks
Joined: Nov 2007
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From: Wake Forest NC
Race Director
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