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is this even possible, short of making tiny 2-cylinder cars out of plastic?
Quote:
The Obama Administration today finalized groundbreaking standards that will increase fuel economy to the equivalent of 54.5 mpg for cars and light-duty trucks by Model Year 2025. When combined with previous standards set by this Administration, this move will nearly double the fuel efficiency of those vehicles compared to new vehicles currently on our roads.
Location: By the sea, by the sea, by the beautiful sea
68,327 posts, read 54,350,985 times
Reputation: 40731
Quote:
Originally Posted by HappyTexan
Are we going to be 100% corn fuel by then as well ?
That depends on what 'equivalent' means in the standard. Ethanol has only ~ 1/2 the energy density of gasoline so I'd think 'equivalent' mpg would be 1/2 using 100% ethanol. But corn fuel seems more folly than much else, better we continue seeking other fuels.
It should be attainable, a mid '70s VW Scirocco would yield mpg in the low 40s at a steady cruise and we've learned a lot in the last 40+ years. I'd like to see the cost of carbon fiber come down considerably, low weight as well as good aero are key to high mpg.
Well, that is 13 years in the future. I am guessing our engineers can do it. And if we don't, the Japanese will. They already kicked our butts on the hybrids.
the 1985 Chevy Sprint got 55MPG...it was a 3 cylinder engine.... and the car had a whole lot of problems (not dealing with the MPG)
Chevrolet SprintThe Chevrolet Sprint was sold in the United States and Canada, with GM continuing to market the Chevette until 1987 alongside the Sprint. In the 1988 model year, the naturally aspirated hatchback was named the Chevrolet Sprint Metro.
The "Sprint" and "Sprint Metro" differed in their engines, though both were computer controlled carb systems. From 1985 to 1988, the carbureted 1.0 L 3-cylinder engine used a hemispherical head design. Later, fuel injection required the cylinder head for 1989 be redesigned to add the additional cooling required, reducing gas mileage.
The Sprint was originally offered in parts of the western US for the 1985 model year; subsequently Chevrolet marketed the Sprint across North America. All models were initially 3-dr hatchbacks. Starting in 1986, a five-door hatchback version was offered, called the Sprint Plus. That year, another model called the Sprint ER was offered that included a few extra features, such as an "upshift" light to indicate the ideal speed to shift to the next highest gear on manual transmission models. Although air conditioning was offered in all years, the three-speed automatic transmission wasn't offered until 1986. All models featured front-wheel drive and 12-inch tires.
Turbocharged versions of the 1.0 L 3-cylinder engine were available in the Turbo Sprint in both the United States and Canada. Colors were limited to red, white and blue for the Turbo Sprint. In the United States, the label was dropped with the introduction of the Geo Metro (second generation Cultus), but it continued to be used for a while longer in Canada.
EPA Official City MPG: 47
City MPG (2008 computation method): 39
City MPG (before adjustments): 53
EPA Official Highway MPG: 53
Highway MPG (2008 computation method): 47
Highway MPG (before adjustments): 68
EPA Official Combined MPG: 50
Combined MPG (2008 computation method): 42
Combined MPG (before adjustments): 58
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other cars:
2000 Honda Insight
Combined MPG: 53
City MPG: 49
Highway MPG: 61
Cylinders: 3
--
1994 Geo Metro XFI
Combined MPG: 47
City MPG: 43
Highway MPG: 52
Cylinders: 3
--
1986 Honda Civic Coupe HF
Combined MPG: 46
City MPG: 42
Highway MPG: 51
Cylinders: 4
--
1995 Honda Civic HB VX
Combined MPG: 43
City MPG: 39
Highway MPG: 50
Cylinders: 4
--
and let's not forget
the Model T boasted 25 MPG in 1908
Last edited by workingclasshero; 08-28-2012 at 02:02 PM..
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