Fuel Efficiency Converter

Online converter to work out your fuel efficiency in metric or imperial terms.
How does your cars compare in fuel consumption? Converter for US MPG, UK MPG and litres/100km.
What can be done to improve fuel efficiency? What new efficient car technologies could be considered.

Personal Fuel Efficiency Analysis

What is your vehicle/s achieving in fuel efficiency? Note the distance you travelled and the fuel volume used next time you fill up. Enter your preferred distance and fuel volume units with values and press the Get Results button.		 Car Motorbike Hybrid Fuel Efficiency Converter

Distance kilometers , miles Fuel Qty litres , US gallons UK gallons
US miles per gallon UK miles per gallon litres per 100 km

Where does your car's fuel efficiency compare with the vehicles in the table below?

Fuel Efficiency Comparison

US miles per gallon UK miles per gallon Litres per 100 km Sample car / vehicle / motorbike fuel use
1 1.2 234
5 6.01 47
10 12.01 23.5
15 18.02 15.66 Hummer H3 , Ford F150
20 24.02 11.75 Ford Escape 4WD
25 30.03 9.4 Subaru Impreza
30 36.03 7.83 Hyundai Elantra
35 42.04 6.71 Mini Cooper, Mazda 2, Nissan Micra, Kia Rio
40 48.04 5.87 Smart Fortwo, Mitsubishi Colt
45 54.05 5.22 Honda Civic Hybrid, Hyundai i20
50 60.05 4.7 BMW 118d, Suzuki Alto, Peugeot 207 HDi turbo diesel
55 66.06 4.27 Toyota Prius, Kawasaki KLR 650 motorcycle, Citroen C3 HDi, Fiat 500
60 72.06 3.92 Kawasaki Ninga 250 motorcycle, Mini Cooper Diesel, Ford Fiesta Diesel
65 78.07 3.61 Piaggio Fly 125 scooter, Smart Fortwo turbo diesel
70 84.07 3.36 Volkswagen Polo 1.4 turbo diesel with bluemotion
75 90.08 3.13 Honda CBF 125 motorcycle
80 96.08 2.94 Vespa LX50 scooter
85 102.09 2.76
90 108.1 2.61
95 114.1 2.47
100 120.11 2.35
* Combined cycle fuel consumption figures used where possible (city and highway driving).

Driving for Fuel Efficiency

  • Avoid excessive acceleration
  • Keep within the speed limit 
  • Reduce cargo weight if possible
  • Remove roof racks if not needed
  • Use cruise control on highways were possible
  • Change up gears as soon as practical 
  • Turn off air conditioning if not needed
  • Check tyre pressure suits the speed and load of the vehicle. Too low tyre pressure uses more fuel.
  • Choose a fuel efficient vehicle suited to the intended transport purpose if possible.

Current High Fuel Efficiency Engine Design

 economy changing with speed and load up and down
  • Stop start engine automatic control. Engine stops when car stops. Engine starts when you want to resume. Volkswagen and BMW use this technology.
  • Some of the smaller diesel engines can have the same fuel economy as a hybrid especially in highway driving.
  • Smart alternators that only engage when car is braking. GM and BMW use this technology.
  • Multi-port fuel injection. Each cylinder has its own injector better controlling fuel air mix.
  • Variable value technology. This improves efficiency across the engine speed range better.

    • Future Fuel Energy Efficiency

    No fuel Electric Car Tesla Roadster
    This electric car has a range of 354 km (220 miles) and can reach 100 kph (60 mph) in 4 seconds. It has electric storage of 53 kWh.
    Has this fuel efficiency converter generated ideas fo your next efficient vehicle?
    Track the new car models. Compare fuel, hybrid and electric vehicles. Which technologies could save you money and help the environment? See links for further ideas.

    Matthewb Homepage Electric versus Fuel Vehicle Calculator Solar Thermal Energy as a transport source fuel No Fuel Electric Car Article Solar Thermal Energy as a transport source fuel
    Converter Section Energy Calculators Computer Efficiency Solar Energy Energy Efficiency

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