Most Fuel-Efficient Cars of the Past 30 Years

© Toyota Motor Sales USA© Toyota Motor Sales USA
2016–2021 Toyota Prius L Eco
EPA Rating: 58 mpg city / 53 mpg highway / 56 mpg combined
The fourth-generation Toyota Prius debuted for the 2016 model year, including the Prius Eco with an EPA combined fuel economy rating of 56 mpg that unseated the 2000 Honda Insight as the most fuel-efficient vehicle (until the Hyundai Ioniq came along, that is). The latest version of Toyota’s first hybrid vehicle is powered by a Hybrid Synergy Drive that combines a 1.8-liter gasoline engine with two electric motor/generators and an electronically controlled planetary-type continuously variable transmission. The fourth-generation Prius uses smaller, lighter hybrid components including a lithium-ion battery pack. Prius L Eco is the most fuel-efficient version of the model line, with other Prius Hybrid 2WD trim levels rated at 54 mpg city / 50 mpg highway / 52 mpg combined.

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