40 MPG to L/100km (US & UK MPG)
40 MPG = 5.88 L/100 km
A car that gets 40 miles per US gallon uses 5.88 liters per 100 kilometers.
Step by step
- Use L/100 km = 235.215 ÷ MPG (US).
- 235.215 ÷ 40 = 5.88 L/100 km.
40 MPG is typical of compact cars and efficient small SUVs.
Details
- L/100 km
- 5.88
- km/L
- 17.01
- UK MPG
- 48
- Gallons per 100 miles
- 2.5
- Fuel cost per 100 miles at $3.50/gal
- $8.75
How it works
MPG measures how far you go on a gallon (higher is better); L/100 km measures how much fuel you burn per distance (lower is better). Because they are reciprocals, equal MPG improvements save less fuel at high MPG: going from 15 to 20 MPG saves far more fuel than going from 40 to 45.
Nearby values
Related conversions
Frequently asked questions
What is 40 MPG in L/100 km?
5.88 L/100 km.
What is 40 MPG in km/L?
17.01 km/L.
Is 40 MPG good?
Yes — that is excellent fuel economy.
What is 40 US MPG in UK MPG?
48 UK MPG.