The 2018 Chevrolet Sonic 5 1.8L with the automatic transmission gets 28 MPG combined. This means practical transportation at a reasonable cost. It’s not a hybrid with extremely high efficiency, and it’s not a muscle car that uses a lot of gas. It’s a subcompact for budget-conscious drivers, city residents who deal with small parking spaces, and first-time car owners who want affordability and reliability. The Sonic is a competent, economical, and surprisingly spacious small car.

City and highway performance

EPA estimates are 25 MPG in the city and 34 MPG on the highway, which is close to real-world performance. The 1.8L four-cylinder engine gives enough power for driving in cities. The six-speed automatic transmission shifts smoothly and efficiently, keeping the engine in its best power range. On the highway, the Sonic cruises comfortably and maintains good fuel economy if you don’t accelerate too quickly. Staying at reasonable highway speeds is important to get the 34 MPG highway rating.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Chevrolet Sonic 5 1.8L at $1,550. This is based on driving 15,000 miles per year and using the national average fuel price at the time. Fuel costs will change based on driving, local fuel prices, and fuel type. However, the $1,550 estimate is a good way to compare the Sonic’s fuel costs to other cars in its class. Good maintenance and careful driving can lower these costs.

Real-world expectations

EPA estimates are a starting point, but real-world fuel economy can be different. Fast driving, frequent stops, and using air conditioning can hurt fuel consumption. Gentle acceleration, consistent speeds, and correct tire inflation can help drivers meet or beat the EPA estimates. Many owners report that 28 MPG combined is easy to get with careful driving. People who mostly drive on the highway often report numbers near or slightly above the 34 MPG rating. The Sonic’s fuel economy depends on driving style and conditions.

How it compares

The 2018 Chevrolet Sonic 5 1.8L faces strong competition in the subcompact segment. The Honda Fit has versatile cargo space and gets an EPA-estimated 31 MPG combined with its automatic transmission. The Toyota Yaris iA (later renamed Toyota Yaris) has good value and standard options and gets 34 MPG combined. The Nissan Versa Note (S trim with automatic) is a value-oriented hatchback that gets 31 combined MPG. The SONIC MPG across all years might not be the best, but it is still a good option for buyers who want its features, styling, and price within Chevrolet’s lineup. The Sonic is a solid choice in the subcompact category for Chevrolet fuel economy, especially with potential discounts.

Tips to maximize efficiency

The Sonic’s 1.8L engine works best with smooth acceleration. Don’t start and stop quickly, and try to keep a consistent speed.

Correct tire inflation is critical for fuel efficiency. Check your tire pressure often and make sure it matches the recommended pressure on the sticker inside the driver’s side door. Low tires create more rolling resistance, which makes the engine work harder.

Reduce the use of accessories that use engine power. Air conditioning uses a lot of power, and even power windows and heated seats can slightly lower fuel economy. Open the windows or use the fan instead of A/C when possible. Limit accessory use, especially during short trips when the engine isn’t warm.

Regular maintenance is important for good fuel efficiency. Keep your engine tuned, change the air filter often, and use the recommended oil. A well-maintained engine runs better, which leads to better fuel economy and less pollution. Small maintenance investments can save money on gas.

Remove extra weight from the car. Extra cargo in the trunk or backseat adds weight, which forces the engine to work harder. Take out anything you don’t need regularly, especially heavy things. A lighter car will be more fuel-efficient and easier to drive.