The 2018 Kia Rio 1.6L 4-cyl gets 32 MPG combined. It’s a reliable, affordable, and fuel-efficient small car for budget-conscious buyers, and this fuel economy figure delivers on that promise.

City and highway performance

The Rio’s 1.6L four-cylinder, paired with the six-speed automatic, returns an EPA-estimated 28 MPG in the city and 37 MPG on the highway. These figures reflect a vehicle designed for everyday driving, prioritizing consistent performance over outright thrills. The city MPG is particularly relevant as many Rio owners are likely to use it primarily for commuting and running errands.

The respectable highway number is a bonus, making longer trips manageable without excessive fuel stops. The six-speed automatic transmission is a better choice for fuel economy than the five-speed manual that was available, and finding a used model with the automatic is well worth it.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Kia Rio 1.6L 4-cyl at $1,350. This calculation is based on driving 15,000 miles per year and using national average fuel prices. Of course, your actual fuel costs will vary depending on your driving habits, location, and the ever-fluctuating price of gasoline, but the $1,350 figure provides a benchmark for comparing the Rio’s running costs with other vehicles in its class, like all Kia fuel economy data.

Real-world expectations

While the EPA estimates are a good starting point, real-world fuel economy can vary. Drivers who frequently accelerate hard, drive aggressively, or spend a lot of time in stop-and-go traffic might see slightly lower numbers than the official ratings. On the other hand, those who adopt a more conservative driving style and prioritize smooth acceleration can often achieve or even exceed the EPA figures.

Regular maintenance, such as tire inflation and timely oil changes, also plays a role in maintaining optimal fuel efficiency, as does RIO MPG across all years.

How it compares

In the subcompact segment, the 2018 Kia Rio holds its own against competitors. The Mitsubishi Mirage G4, for example, boasts an impressive 37 MPG combined, but that comes at the expense of performance and refinement. The Honda Fit, another popular choice, achieves around 33 MPG combined, slightly better, but often comes at a higher initial price. The Toyota Yaris iA (later rebranded as the Toyota Yaris) delivered a similar 32 MPG combined.

The Rio offers a good balance of fuel economy, features, and affordability. With its longer warranty, some buyers value the Rio’s coverage and acceptable fuel economy more than the higher MPG with less enjoyable driving experience.

Tips to maximize efficiency

Minimize idling time. The 1.6L engine, like other small-displacement engines, burns surprisingly rich when idling. Avoid unnecessary idling, especially during warm-up, as it significantly reduces fuel economy. Turn the engine off if you anticipate being stationary for more than a minute or two.

Maintain optimal tire pressure. Underinflated tires increase rolling resistance, which forces the engine to work harder and consume more fuel. Regularly check your tire pressure and inflate them to the recommended levels, typically found on a sticker inside the driver’s side doorjamb. Consider using a digital tire pressure gauge for accurate readings.

Avoid aggressive driving. Rapid acceleration and hard braking consume more fuel. Drive smoothly and conservatively, anticipating traffic flow and maintaining a consistent speed. Use cruise control on the highway to maintain a steady pace and optimize fuel efficiency.

Lighten the load. Carrying unnecessary weight in your vehicle reduces fuel economy. Remove any items you don’t need, such as sports equipment, tools, or other bulky items. A lighter vehicle requires less energy to accelerate and maintain speed.