Litres Per 100km to Mpg
Convert litres per 100km to MPG easily. Free fuel economy converter for cars.
Formula
mpg = 282.481 / L/100km
Common Conversions
How to Convert L/100km to MPG
Formula: UK MPG = 282.48 / L/100km, or US MPG = 235.21 / L/100km. So a vehicle rated 6 L/100km = 47.1 UK MPG = 39.2 US MPG. The non-linear relationship means small differences at high efficiency mean larger gaps in MPG (and vice versa).
Useful for translating European car spec sheets (which use L/100km) to UK or US driver-comprehension. A modern European hybrid at 4 L/100km = 70.6 UK MPG = 58.8 US MPG. A diesel car at 5 L/100km = 56.5 UK MPG = 47 US MPG. Always note whether the MPG figure is UK or US to avoid 20%+ misunderstanding.
L/100km to MPG Reference
| L/100km | UK MPG | US MPG |
|---|---|---|
| 3 | 94.16 | 78.40 |
| 4 | 70.62 | 58.80 |
| 5 | 56.50 | 47.04 |
| 6 | 47.08 | 39.20 |
| 7 | 40.35 | 33.60 |
| 8 | 35.31 | 29.40 |
| 10 | 28.25 | 23.52 |
| 15 | 18.83 | 15.68 |
Frequently Asked Questions
Why do hybrid cars have such high MPG?
Electric drive in city driving (when most fuel waste happens at idle/start-stop). A hybrid at 4 L/100km in city = much higher than a similar non-hybrid at 8 L/100km. Hybrid advantage shrinks at steady highway speeds where the engine runs efficiently regardless.
Quick mental conversion?
L/100km × 235 ≈ US MPG. L/100km × 282 ≈ UK MPG. So 5 L/100km × 235 = 1175, divide by 5 = 235... no wait, that's wrong. The actual: 235 / L/100km = US MPG. Use a calculator for precision; mental approximation breaks down for non-trivial values.
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