Calculate your car's fuel economy, convert between MPG and L/100km, and estimate your fuel costs.
Avoid aggressive driving like rapid acceleration and hard braking. Smooth, steady driving can improve your MPG by up to 30% on the highway.
Fuel economy usually decreases at speeds above 50 mph (80 km/h). Driving 5 mph slower can improve fuel efficiency by 7-14%.
An extra 100 lbs (45 kg) in your vehicle could reduce your MPG by up to 1%. Remove unnecessary items from your trunk or roof rack.
Under-inflated tires can lower gas mileage by about 0.2% for every 1 PSI drop in pressure. Check your tire pressure regularly.
On long, flat stretches of highway, using cruise control helps maintain a constant speed and can save fuel.
A well-maintained engine runs more efficiently. Follow your car's recommended service schedule for oil changes, air filter replacements, and tune-ups.
The standard unit in the United States. It measures how many miles a vehicle can travel on one US gallon of fuel. A higher MPG value is better.
The standard unit in Canada, Europe, and many other parts of the world. It measures how many liters of fuel a vehicle consumes to travel 100 kilometers. A lower L/100km value is better.
Used in some regions, this unit measures how many kilometers a vehicle can travel on one liter of fuel. It is similar to MPG in that a higher value is better.