Hyundai · 2018
Sonata SE 2.4L 4-cyl
✓ EPA Verified
Regular Gasoline
Large Cars
Front-Wheel Drive
City
25
MPG
Combined
29
MPG
Highway
36
MPG
Annual Fuel Cost
$1,500
Based on 15,000 miles/year · EPA estimates
vs avg gas vehicle
$650
saved per year
Class Comparison — Large Cars
Top 25%
Better than 75 out of 100 vehicles in its class for fuel efficiency.
This vehicle: 29 MPG
This vehicle
29 MPG
Class average
33 MPG
Class lowest
14 MPG
EPA Energy & Environment Scores
6
Energy Score
Out of 10
6
GHG Score
Out of 10
308 lbs
Annual CO₂
g/mile tailpipe CO₂
No
Start-Stop
Not equipped
Vehicle Specifications
Engine2.4L 4-cyl
TransmissionAutomatic (S6)
DriveFront-Wheel Drive
Fuel TypeRegular Gasoline
Vehicle ClassLarge Cars
Engine DescSIDI
Start-StopNo
EPA Vehicle ID38664

29 MPG combined isn’t going to set any records, but it establishes the 2018 Hyundai Sonata SE 2.4L as a practical choice for drivers who want reliability and value more than the best fuel efficiency. This is the standard Sonata, the volume seller aimed at commuters and families who need a dependable mid-size sedan. Fuel economy is a consideration, of course, but it’s balanced against purchase price, cost of ownership, and Hyundai’s reputation for a strong warranty.

City and highway performance

The EPA estimates for the 2018 Sonata SE with the 2.4L engine and automatic transmission are 25 MPG in the city and 36 MPG on the highway. The city figure is respectable for a car of this size and power, showing the engine’s ability to operate efficiently in stop-and-go traffic. The 36 MPG highway rating is where the Sonata excels, making it a comfortable and relatively economical choice for longer road trips. The six-speed automatic transmission is geared for relaxed cruising, helping to keep the engine at its best for fuel efficiency once you’re up to speed.

Annual fuel cost

The EPA estimates that the annual fuel cost for the 2018 Hyundai Sonata SE 2.4L will be about $1,500 per year. This figure is based on driving 15,000 miles per year, using the EPA’s combined MPG rating, and assuming current national average fuel prices. Your actual costs will vary depending on your driving, the type of fuel you use, and local gasoline prices. However, the $1,500 estimate provides a useful benchmark for comparing the Sonata’s fuel costs to other vehicles. This number is a key data point for buyers who want predictable running expenses.

Real-world expectations

While the EPA estimates offer a standardized basis for comparison, your real-world mileage may vary. Aggressive acceleration, frequent hard braking, and consistent use of air conditioning can all hurt fuel economy. On the other hand, gentle driving, consistent speeds, and proper tire inflation can help you achieve or even exceed the EPA estimates. Owners report that the Sonata SE 2.4L is generally capable of matching, or beating, its 36 MPG highway rating on longer trips. The 25 MPG city figure may be more challenging to achieve consistently, especially during rush hour.

How it compares

The 2018 Honda Accord LX, a direct competitor, offers slightly better fuel economy with an EPA rating of 30 MPG combined. The Toyota Camry LE, another popular choice, matches the Accord’s 30 MPG combined. These differences, while seemingly small, can add up and are reflected in slightly lower annual fuel costs for the Accord and Camry. On the other hand, some competitor models with larger engines or different drivetrain configurations struggle to match the Sonata’s highway fuel economy. For example, some Nissan Altima trims achieve a similar combined MPG but often fall short on the highway. For drivers prioritizing highway cruising, the Sonata’s 36 MPG offers a competitive advantage, giving them reason to check all Hyundai fuel economy data before buying.

Tips to maximize efficiency

The simplest way to improve your Sonata’s fuel economy is to drive smoothly. Avoid rapid acceleration and hard braking, and try to maintain a consistent speed whenever possible. The Sonata rewards a gentle touch, both in terms of fuel consumption and overall driving comfort.

Proper tire inflation is critical for fuel efficiency. Check your tires regularly and maintain the recommended pressure, which is typically found on a sticker inside the driver’s side doorjamb. Underinflated tires create more rolling resistance, which reduces fuel economy. Overinflated tires can compromise handling and ride quality.

Regular maintenance, including oil changes and air filter replacements, is essential for keeping your Sonata running efficiently. A clean air filter ensures that the engine receives enough airflow, while fresh oil reduces friction and prevents engine wear. Ignoring these basic maintenance tasks can hurt fuel economy and overall performance. Always be sure to explore SONATA MPG across all years to understand how this model’s fuel economy has changed.

Minimize the use of air conditioning whenever possible. The AC compressor places a load on the engine, which reduces fuel economy. On cooler days, consider opening the windows or using the ventilation system instead. Using the AC sparingly can have a noticeable impact on your fuel consumption; only use the AC when absolutely needed.

Avoid carrying unnecessary weight in your Sonata. Extra cargo adds to the vehicle’s overall weight, which requires the engine to work harder and burn more fuel. Remove any unnecessary items from the trunk and backseat to improve fuel economy. A cleaner, lighter vehicle can improve MPG.