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#1




liter per 100 km to MPG
Hi, need help with my rusty algebra to come up with a formula for this conversion.
This is the way gas milerage is rated in Australia, liters per 100km, I can do the math to make the conversion for any amount of liters, but don't have a general formula. say a car is rated at 10 liters per 100 km, 10l =10/4=gals, 100 km= 100*. 6= 60miles, no problem....60/2.5=24MPG is there a simpler way? TY 
#2




Re: liter per 100 km to MPG
There is a conversion page available here:
http://www.onlineconversion.com/fuel_consumption.htm 
#3




Re: liter per 100 km to MPG
A simple formula for doing the conversion is:
US MPG = 235 ÷ E UK MPG = 282 ÷ E where E is the rating in liters per 100 kilometers. The MPG formulas are different for the United States and United Kingdom, because the UK gallon of 4.546 liters (also known as the Imperial gallon) is about 20% larger than the US gallon of 3.785 liters. Here's a sample calculation. For a fuel efficiency of 9 liters per 100 km, the conversions are US: 235 ÷ 9 = 26 MPG UK: 282 ÷ 9 = 31 MPG Here's a table showing the conversions for a number of different values: Code:
 MPG L/100 km  US UK + 4  59 71 6  39 47 8  29 35 10  24 28 12  20 24 14  17 20 16  15 18 US MPG = 100/E [km/L] x 0.621 [mi/km] x 3.785 [L/US gal] = 235 ÷ E UK MPG = 100/E [km/L] x 0.621 [mi/km] x 4.546 [L/UK gal] = 282 ÷ E 
#4




Re: liter per 100 km to MPG
These maths conversions are all well and good, but in Europe the fuel consumption is quoted as urban and extraurban. These European figures involve a drive around a standard course with stopstarts, accelerations and so on. So they attempt to represent reallife driving.

#5




Re: liter per 100 km to MPG
Quote:
The mathematical conversions above are for units only and assume the same driving profile. Also note the difference in US gallon (3.785411784 L exactly) and UK gallon (4.54609 L) must be considered. 
#6




Re: liter per 100 km to MPG
Metric to Imperial. Kms divided by litres X 2.824 will get u really close to mpg imperial.

#7




Re: liter per 100 km to MPG
Quote:
The factor comes from dividing 4.54609 L/Imp. gallon by 1.609344 km/mi (both factors exact). To 7 digits, factor is 2.824 809 
#8




Re: liter per 100 km to MPG
I know this is an old thread, but the standard formula is "282.48/(litres per 100km)"

#9




Re: liter per 100 km to MPG
This factor is correct for Imperial gallons. For US gallons use 235.21 instead.

#10




Re: liter per 100 km to MPG
Quote:
What we have here in datasheets is urban, extra urban and, redundantly, "mixed" which  you guessed it  is always middle spot in between the other two figures. Typically the difference urban / extraurban is given as 25  30% which is generally correct. 
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