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SC430 - 2nd Gen (2001-2010)

Question about MPG

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Old 12-13-18, 12:25 AM
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socaligs
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Default Question about MPG
thinking about purchasing 05 SC and wondering the real life MPG? Thanks in advance.
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Old 12-13-18, 03:02 AM
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Bgw70
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My 2002 gets 18/21 mpg
My 2007 gets 20/23 mpg
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Old 12-13-18, 04:02 AM
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Unless you are using your SC for a daily driver, which some people do, it is not that bad for a V8.
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Old 12-13-18, 04:33 AM
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On interstate runs, it's not unusual for me to get 25+ mpg. I average daily 21-24 on my work runs, which is county roads with several stop signs. Better than I had expected. Like any other car, how heavy your foot is determines the mileage - with a V8, that it even more noticeable.
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Old 12-13-18, 08:52 AM
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I get loads as mine runs on LPG , 40 mpg traveling to and from work which is all slow stop start and lots of waiting at lights and small islands , 60 mpg when cruising on motorways.
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Old 12-13-18, 09:01 AM
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Bgw70
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Originally Posted by Lawler999
I get loads as mine runs on LPG , 40 mpg traveling to and from work which is all slow stop start and lots of waiting at lights and small islands , 60 mpg when cruising on motorways.
we must have different measurements for a gallon...
not sure how those numbers are possible.
Last edited by Bgw70; 12-13-18 at 09:05 AM.
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Old 12-13-18, 09:58 AM
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LPG is £0.53 a litre , petrol is £1.25 a litre .
So i get double the mileage for the money .
40 mpg around town and closer to 60 mpg on motorway .
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Old 12-13-18, 10:19 AM
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Originally Posted by Bgw70


we must have different measurements for a gallon...
not sure how those numbers are possible.
Imperial gallon ~ 1.2 US gallon
So 40mpg Imp ~ 33 mpg US
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Old 12-13-18, 10:23 AM
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If you fuelled your car with fuel that was half the price, you could in effect say you have doubled your MPG .
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Old 12-13-18, 11:26 AM
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Originally Posted by Lawler999
If you fuelled your car with fuel that was half the price, you could in effect say you have doubled your MPG .
thank you for the details of the very high mpg.

completly understand now.
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Old 12-13-18, 01:06 PM
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Originally Posted by Lawler999
If you fuelled your car with fuel that was half the price, you could in effect say you have doubled your MPG .
Imagine what your mileage would be if you didn't drive at all!
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Old 12-14-18, 09:08 AM
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Originally Posted by Lawler999
If you fuelled your car with fuel that was half the price, you could in effect say you have doubled your MPG .
you may not be wrong at the final answer, but you must compare miles(km) with LPG and petrol per gal(liter) for the purpose of fuel efficiency comparison and then multiply with fuel cost factor difference (50%)
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Old 12-14-18, 05:22 PM
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Consistent 19.5 no matter how I drive.
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Old 12-15-18, 11:53 AM
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2002, 19.5 local , 28 at 85 mph hwy.
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Old 12-15-18, 05:10 PM
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2005 SC here with the old 5 speed trans. 16 to 18 city but 26 pure highway on road trips. Even made 27.5 once.
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