When it comes to the fuel-efficiency of any automobile, there will be many factors that influence their final gas mileage including, but not limited to the car's size, engine type, and performance. At the same time, so much progress has been made in terms of improving various previously used car design concepts, that many individuals looking to replace their old car with a newer vehicle, may ultimately be able to purchase a car that is not only larger and more comfortable than their older counterpart, but one that will also offer better gas mileage. This will be especially true for the SUVs class of vehicles that represent one of the least efficient types of automobiles found on the American market. While some models purchased in the 1990s featured an original gas mileage as low as 13/15 miles-per-gallon, today there are many large SUVs and crossover vehicles that offer a gas mileage that almost doubles the typical averages reported by their older counterparts. One only has to look at the 2013 Ford Explorer - able to travel as much as 28 highway miles on a single gallon of fuel - to notice this massive difference. What is even more impressive is the fact that this particular sport utility vehicle does not use a hybrid engine, but instead its proprietary EcoBoost engine design simply improves on the design of traditional combustible engines. The price of the vehicle is also very reasonable, with the current MSRP being listed at $29,000 for the newest 2013 edition.
Individuals willing to consider a hybrid, or even completely electric vehicle, will be able to take advantage of models featuring much, much higher gas mileage. The 2013 Ford C-Max, whose engine features a hybrid configuration, has a combined fuel economy of 43 miles per gallon, with some owners reporting averages as high as 65 miles per gallon for traveling on high-speed highways. Finally, completely electric vehicles - like the 2013 Mitsubishi i-MiEV for example - have a "fuel economy" that exceeds 100 miles per one charge of their battery. However, any individual thinking of purchasing a fully electric motor vehicle must consider the disadvantages brought on by the current lack of proper infrastructure needed to efficiently recharge these vehicles on the road.