Quick answer
35 MPG (US) ≈ 6.72 L/100km ≈ 42 MPG (UK).
How it works
Note the direction flip: higher MPG is better, but lower L/100km is better. UK gallons are larger than US gallons, so UK MPG numbers run higher.
Formula
L/100km = 235.215 ÷ MPG (US) · L/100km = 282.481 ÷ MPG (UK)
Assumptions & limitations
- Results are rounded for display.
Frequently asked questions
Why is UK MPG different?
The imperial gallon is 4.546 liters vs 3.785 liters for the US gallon — about 20% bigger.