55 MPG (US) to L/100km
4.3 L/100km
55 mpg = 4.3 L/100km.
L/100km
4.3L/100km
55 mpg = 4.3 L/100km
The short answer
How many L/100km is 55 MPG (US)?
55 mpg = 4.3 L/100km. L/100km = 235.214583 ÷ MPG (US), so the working is 235.214583 ÷ 55 = 4.3.
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 ÷ 55 = 4.3
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 | 4 | −0.27663 |
| 1 decimal | 4.3 | +0.02337 |
| 2 decimals | 4.28 | +0.00337 |
Round trip: take 4.3 L/100km back the other way and you land on 54.7011 mpg — a drift of 0.2989 mpg. That gap is the rounding, not the conversion.
What 55 mpg looks like
54 mpg
EPA rates the standard 2024 Toyota Prius at 54 miles per gallon combined on its window sticker.
Frequently asked questions
What is 55 MPG (US) in L/100km?
55 MPG (US) is 4.3 L/100km. L/100km = 235.214583 ÷ MPG (US), so the working is 235.214583 ÷ 55 = 4.3.
How accurate is 4.3 L/100km?
Rounding to 4.3 L/100km and converting straight back gives 54.7011 mpg, a drift of 0.2989 mpg from the 55 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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