In recent years, fuel efficiency has greatly improved, mainly due to the stricter fuel rules imposed by the National Highway Traffic Safety Authority. The Environmental Protection Agency reports that new cars sold in the United States today have an average of 24.9 mpg. However, according to the Pew Environment Group, only a generation ago, vehicles averaged around 17 mpg in 1980. The fuel efficiency of cars for American families is an instantly important issue. Some drivers spend over $1,000 a year on fuel. More than miles per gallon has a less environmental impact in the long term because fuel efficiency means lower carbon emissions. We looked at cars with petrol-driven combustion engines, not electrical, hybrid or diesel engine vehicles, and removed trucks or SUVs to create a level playing field with a view to achieving fuel efficiency. Here are the five most fuel-efficient and the four least fuel-efficient cars produced today. According to data from the US Department of Energy, the Chevrolet Spark can save fuel costs for a total of $1.250 over the five year time compared with fuel costs associated with the average new vehicle (Chevrolet Spark is 33 mpg when factoring in urban and highway driving). While highway driving the Spark gets an average 38 mpg and 30 mpg while stop and go urban driving. The 2020 Versa achieves 28 mpg in terms of urban motor conditions and 32 mpg on the highway, for an average EPA of just under 37 miles per gallon combined. A combined 35 mpg is possible and less than $15.700. The Corolla hatchback is new for 2019, and its 42 miles per gallon of road transport makes it an important vehicle for anybody with a long road trip to take it into account. A 2019 Toyota Corolla Hatchback averages 36 mpg for residential and road traffickers. Corolla Hatchback 2019 features most standard safety features such as emergency automatic braking and lane protection. A new Honda Fit receives 33 mpg and 40 mpg on the Honda Fit 36.5 mpg in combined urban and highway drive. In view of the 130-horsepower engine, the Fit is slow to achieve road speed. But it is good and good for health. But it is fine.