Fuel Economy of the 2016 Kia Rio Eco. Compare the gas mileage and greenhouse gas emissions of the 2016 Kia Rio Eco side-by-side with other cars and trucks The Kia Rio is a subcompact sedan and four-door hatchback that fits in the automaker's lineup below the Forte. The Rio strives to pair fuel efficiency and available features for class-leading Kia Rio 7.7. Rio Engine: Less Power, More Efficient. The Rio features a new 1.6-liter four-cylinder engine that produces 120 horsepower (10 horsepower less than the 2019 model). While the engine provides sufficient power, it can also get really noisy at highway speeds. The Kia Rio is available in two variants: a sedan or five-door hatchback with a shared 120-hp, 1.6-liter four-cylinder engine and standard CVT. Not only is the Rio miserly in its fuel economy Fuel Economy of the 2022 Kia Rio. Compare the gas mileage and greenhouse gas emissions of the 2022 Kia Rio side-by-side with other cars and trucks Like the engine, the continuously variable automatic transmission (CVT) is new for 2020, and it contributes to the Rio's improved fuel economy. This Kia delivers 33 mpg in the city and 41 mpg on the highway, making it one of the most efficient cars in the class. "The new 1.6-liter engine puts out 10 less horsepower than last year, but the new The 2023 Kia Rio gets 36 mpg. 2023 Kia Rio | Kia America. The 2023 Kia Rio is Kia’s entry-level car and it competes on price with the Mitsubishi Mirage. But, it gets a much more powerful 120-horsepower 1.6-liter engine that, while not a speed demon, does make quicker work of highway onramps. For $16,750 you get a lot in the Rio, including an 2007. 8.1 /10. U.S. News Rating. The 2021 Kia Rio is a solid subcompact car that comes in sedan and hatchback body styles. The Rio is fun to drive, returns great fuel economy and has an interior that punches above its weight class. It's is a well-rounded option and a good value. p1x4C.