Gasoline
Battery Electric

What vehicle is the most fuel efficient? Mileage Gasoline or petrol is the most common fuel used in cars today. This specialized fossil fuel is designed for four-stroke engines like the ones found in common cars. Gasoline allows for quick starting, fast acceleration, easy combustion and quiet operation. The hydrocarbons contained in gasoline and its production of carbon dioxide when burned contributes to pollution, smog and global warming. Diesel Diesel fuel is widely used in transport vehicles such as tractor-trailer trucks, buses, boats and trains. This fossil fuel is also non-renewable, like gasoline. Although it contributes less carbon dioxide to the environment, diesel creates more organic compounds and nitrous oxide that cause smog. Diesel vehicles tend to last longer than gasoline vehicles, and they have 30 percent better fuel efficiency than the average gasoline vehicle, Liquefied Petroleum Liquefied petroleum, better known as propane, is a clean fuel alternative to gasoline that is used in common vehicles on a limited basis. Liquefied petroleum produces fewer toxins when burned and does not contribute to smog in the same way that diesel and gasoline do. Compressed Natural Gas Gas and diesel engines can be converted to run on compressed natural gas, or CNG. CNG is a clear, odorless and non-corrosive gas that can be used in liquid or gas form to run a combustion engine. Vehicles fitted with a CNG fuel system can be expected to produce 80 percent less ozone-forming emissions than gasoline burning cars. Ethanol Ethanol is a bio-fuel alternative to gasoline that's made from the conversion of sugar cane, corn, barley and other natural products. Ethanol has become popular as a fuel source because in most cases it's one of the only fuels that can fuel a gasoline engine without modifications. Many car models can run on 100 percent ethanol, but it is more commonly used as an additive. Some states have mandated the addition of ethanol to help cut down on the emissions and contamination caused by pure gasoline components. E10, which is gasoline mixed with 10 percent ethanol, is available at most gas stations in America today. Some places use even higher concentrations. Bio-diesel Bio-diesel is a diesel substitute made from sugar beet, rapeseed or palm oil. Bio-diesel burns much cleaner than standard gas or diesel and produces far less carbon dioxide emissions when used. However, continued production of this substance may result in excessive deforestation. Here are further guidelines.