28 MPG (US) to L/100km
8.4 L/100km
28 mpg = 8.4 L/100km.
L/100km
8.4L/100km
28 mpg = 8.4 L/100km
The short answer
How many L/100km is 28 MPG (US)?
28 mpg = 8.4 L/100km. L/100km = 235.214583 ÷ MPG (US), so the working is 235.214583 ÷ 28 = 8.4.
The working
MPG (US) and L/100km are reciprocals of each other, so the conversion is a division rather than a multiplication — which is why the two scales never line up evenly.
L/100km = 235.214583 ÷ MPG (US) 235.214583 ÷ 28 = 8.4
How much precision do you need?
Each row is the same answer cut at a different number of decimals, with what that choice costs you. Pick the shortest row whose error is smaller than whatever you are measuring with.
| Rounded to | Answer (L/100km) | Off by |
|---|---|---|
| Whole number | 8 | −0.40052 |
| 1 decimal | 8.4 | −0.00052 |
| 2 decimals | 8.40 | −0.00052 |
Round trip: take 8.4 L/100km back the other way and you land on 28.0017 mpg — a drift of 0.0017 mpg. That gap is the rounding, not the conversion.
What 28 mpg looks like
28 mpg
The 1975 energy act told carmakers to reach a 27.5 mpg passenger car average by 1985, a figure that then stood for decades.
Frequently asked questions
What is 28 MPG (US) in L/100km?
28 MPG (US) is 8.4 L/100km. L/100km = 235.214583 ÷ MPG (US), so the working is 235.214583 ÷ 28 = 8.4.
How accurate is 8.4 L/100km?
Rounding to 8.4 L/100km and converting straight back gives 28.0017 mpg, a drift of 0.0017 mpg from the 28 you started with. The factor itself is exact; every bit of that difference comes from the rounding, not the conversion.
Nearby values
Any value at all
MPG to L/100km Converter
Convert US MPG to L/100km — read a car’s economy the way the rest of the world quotes it.
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