Convert MPG (UK) (mpg_uk) to km/L (kml) instantly. UK fuel economy to metric conversion.
| Unit | Name | Value |
|---|---|---|
| kml | km/L (kmpl) | — |
| l100km | L/100km | — |
| mpg_us | MPG (US) | — |
| mpl | Miles per Litre | — |
Formula: km/L = MPG (UK) × 0.354
Reverse: Reverse: MPG (UK) = km/L × 2.825
Example (average car): 35.31 MPG (UK) = 12.5 km/L
Typical real-world fuel economy values — sorted from least to most efficient
| MPG (UK) (MPG (UK)) | km/L (km/L) | Vehicle / Context |
|---|---|---|
| 9.887 MPG (UK) | 3.5 km/L | Diesel semi-truck (full load) |
| 12.71 MPG (UK) | 4.5 km/L | Hypercar (McLaren F1) |
| 21.19 MPG (UK) | 7.5 km/L | Large pickup truck |
| 24.01 MPG (UK) | 8.5 km/L | Large SUV |
| 35.31 MPG (UK) | 12.5 km/L | Average new petrol car (global) |
| 39.55 MPG (UK) | 14 km/L | Compact sedan |
| 48.02 MPG (UK) | 17 km/L | European supermini |
| 50.85 MPG (UK) | 18 km/L | Motorcycle (1000cc) |
| 62.15 MPG (UK) | 22 km/L | Honda Insight hybrid |
| 70.62 MPG (UK) | 25 km/L | Toyota Prius hybrid |
| 79.09 MPG (UK) | 28 km/L | Toyota Prius Prime PHEV |
| 84.74 MPG (UK) | 30 km/L | Suzuki Alto (city car) |
| 98.87 MPG (UK) | 35 km/L | Motorcycle (125cc) |
| 141.2 MPG (UK) | 50 km/L | Scooter (50cc) |
| 313.6 MPG (UK) | 111 km/L | Volkswagen XL1 (record) |
MPG (UK) × 0.354 = km/L.
40 MPG UK = 14.2 km/L. 50 MPG UK = 17.7 km/L. 60 MPG UK = 21.2 km/L.
km/L × 2.825 = MPG (UK).
Compares fuel economy across international vehicle specs — converting between MPG (US), MPG (UK), km/L, and L/100km.
Calculates fuel costs and sets efficiency targets using L/100km (Europe/Australia) or MPG (US/UK).
Converts between regional fuel economy standards when reviewing international vehicle launches.
Converts fuel economy specs of rental vehicles between familiar and local units.
Converts fuel efficiency data to calculate CO₂ emissions across vehicle fleets in different units.
Validates fuel efficiency test results across EPA (MPG US), WLTP (L/100km), and JC08 (km/L) cycles.
Miles per gallon — Imperial (MPG UK) uses the larger Imperial gallon of 4.546 liters, making it about 20% higher than the equivalent US MPG figure. It is used in the United Kingdom and some Commonwealth countries for vehicle fuel economy ratings.
UK fuel economy for common vehicles: a Ford Fiesta petrol might achieve 50–55 MPG (UK); a large Range Rover 25–30 MPG (UK); a Toyota Yaris hybrid 65–70 MPG (UK). The UK Government's Vehicle Certification Agency (VCA) publishes official WLTP figures for new cars.
Interesting fact: Because the Imperial gallon is larger than the US gallon, the same vehicle has a higher MPG number in the UK than in the US — leading to frequent confusion when comparing international automotive reviews. A car rated at 40 MPG (US) is only 33 MPG (UK) — 1 MPG (UK) ≈ 1.2009 MPG (US).
Kilometers per liter (km/L) is the fuel efficiency unit standard in Japan, South Korea, India, and many other Asian and Latin American countries. A higher km/L value means better fuel economy — the vehicle travels further on the same amount of fuel.
Japanese automakers publish km/L ratings from the JC08 or WLTC test cycles. A fuel-efficient city car in Japan might achieve 25–35 km/L; a typical sedan 15–20 km/L; a large SUV 8–12 km/L. The 2024 Toyota Prius achieves ~32 km/L under JC08 testing.
Interesting fact: The world record for fuel efficiency in a production vehicle is held by the Volkswagen XL1 (2013), which achieved approximately 111 km/L (261 mpg US) under NEDC testing — a two-seater diesel-electric hybrid that weighed only 795 kg.
Fuel efficiency is measured differently across regions: km/L (Japan, India), L/100km (Europe, Australia, Canada), MPG US (USA), MPG UK (Britain). Converting between them is essential for international vehicle comparisons.
Formula: km/L = MPG (UK) × 0.354. Reverse: MPG (UK) = km/L × 2.825.
All conversions use exact gallon definitions: US gallon = 3.785411784 L; Imperial gallon = 4.54609 L.