An eco friendly cars list can be a helpful source that you can use to help yourself when in doubt about purchasing which one that is suitable not only for the purpose of maintaining good environment but also to your own preferences. But before you go to the list, you can learn one or two things about the type of the powertrain supporting every kind of vehicles and their efficiency in reducing CO2 level. Internal Combustion Engine is what’s widely used in a lot of cars today. It is affordable to produce and uses 100% gasoline to run and delivers 0% impact on reducing CO2 level.

Biodiesel is one fuel alternative to use instead of gasoline. Its efficiency in reducing CO2 level is 100% and it is also more affordable to produce. Cars running fully on electricity is a much more pliable to be used as energy alternative to gasoline but their efficiency in reducing CO2 level varies depending on the source of energy. In addition, the cost to produce electricity-powered engines ranges from medium to high. Production cost of a car greatly affects its final price tag, which is why you need to take it into consideration, especially when you are on budget. Then, we can move on to the eco friendly cars list.

The eco friendly cars list is composed based on the car’s mpg-e, which is a unit of miles per gallon gasoline equivalent. The unit denotes the maximum range of a green vehicle when translated into use of gasoline. Based on this characteristic, you can make decision to buy one of the top four most energy-efficient cars, which are: Hyundai Ioniq Eletric (electric car, 136 mpg-e), BMW i3 (electric, 124 mpg-e), BMW i3 REx (plug-in hybrid, 88 mpg-e), and Toyota Prius Eco (Hybrid electric, 56 mpg-e).