100 mpg to l/100 km
100 mpg (US) = 2.35 l/100 km = 42.51 km/l. 100 mpg (UK) = 2.82 l/100 km = 35.4 km/l. A UK gallon is bigger, so 100 mpg on a British car equals 83.3 mpg on a US gauge.
How to convert 100 mpg to l/100 km
- US mpg: 235.21 ÷ 100 = 2.35 l/100 km
- UK mpg: 282.48 ÷ 100 = 2.82 l/100 km
- km/l (US mpg): 100 ÷ 2.35 = 42.51 km/l
Values around 100 mpg
| mpg | l/100 km (US) | l/100 km (UK) | km/l (US) |
|---|---|---|---|
| 95 mpg | 2.48 | 2.97 | 40.39 |
| 96 mpg | 2.45 | 2.94 | 40.81 |
| 97 mpg | 2.42 | 2.91 | 41.24 |
| 98 mpg | 2.4 | 2.88 | 41.66 |
| 99 mpg | 2.38 | 2.85 | 42.09 |
| 100 mpg | 2.35 | 2.82 | 42.51 |
| 101 mpg | 2.33 | 2.8 | 42.94 |
| 102 mpg | 2.31 | 2.77 | 43.36 |
| 103 mpg | 2.28 | 2.74 | 43.79 |
| 104 mpg | 2.26 | 2.72 | 44.21 |
| 105 mpg | 2.24 | 2.69 | 44.64 |
Need another number, l/100 km to mpg, or km/l? Use the full fuel economy converter.
Questions
How many l/100 km is 100 mpg?
100 mpg (US) is 2.35 l/100 km. 100 mpg (UK, imperial gallon) is 2.82 l/100 km. Use the US figure for American cars and EPA ratings, and the UK figure for British cars and older UK adverts.
Is 100 mpg good?
Yes. 100 mpg is excellent for a petrol car; most hybrids and small cars are in this range.
How do I work out 100 mpg in l/100 km myself?
Divide 235.21 by 100 for US mpg (2.35), or 282.48 by 100 for UK mpg (2.82). The same formula works backwards from l/100 km to mpg.