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Lexus SC 430 Gas Mileage Reports
6 messages, Last post on Dec 24, 2008 at 8:40 AM
You are in the Lexus SC 430 Forum.- Your Host is claires
What is this discussion about? Lexus SC 430, Convertible
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#5 of 6 by bbatts
Oct 21, 2008 (9:25 pm)
Mileage on my 05 is 19 city and 28 hwy. This is actual fill up with gas since the onboard computer seems to error at least + 1/2 mpg extra than actual.
#6 of 6 Re: Lexus SC 430 gas mileage [claires] by tmakogon
Dec 24, 2008 (8:40 am)
Replying to: claires (Jun 18, 2006 1:19 pm)
Driving a 2005 SC430 on a flat land at approx. 45-50°F (without snow) with top up, filled with premium: Highway average speed 45 mph gets 32.5 mpg
Highway average speed 55 mph gets 27.5 mpg
Highway average speed 65 mph gets 25.0 mpg
city stop&go average speed 18.3 mph gets 16.5 mpg
Thus you increase your gas mileage by 10% by slowing from 65 to 55 mph and by 30% by slowing from 65 to 45 mph. At a slow and steady 45 mph the 20-gallon tank should take you 600 miles.
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