With 39 MPG combined, the 2018 Hyundai Sonata Plug-in Hybrid is a good option for drivers who want something between a regular hybrid and an electric car. It uses gas, which gives drivers more confidence compared to going fully electric.

City and highway performance

The EPA estimates the 2018 Sonata Plug-in Hybrid gets 37 MPG in the city and 42 MPG on the highway. These numbers show how the car combines the gas engine and electric motor. In cities, the electric motor provides quick power and operates quietly at low speeds, improving city MPG. The higher highway MPG shows the car can use electric power to maintain speed, reducing gas use on long drives. But, accelerating quickly or driving fast will use more gas, lowering the overall fuel economy. The six-speed automatic transmission (AM6) also helps by shifting gears smoothly to save fuel in different driving conditions.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Hyundai Sonata Plug-in Hybrid is $1,100. This is based on driving 15,000 miles per year and using the national average gas price. This helps buyers estimate their long-term costs. The $1,100 cost is based on a mix of electric and gas miles reflecting the car’s plug-in hybrid design. Drivers who charge often will likely spend much less than the EPA estimate.

Real-world expectations

Owners say that getting the EPA’s 39 MPG combined is possible if you drive carefully and charge regularly. This car is designed to minimize gas use by using electric power. The Sonata Plug-in Hybrid’s electric range is about 27 miles, so charging the battery for short trips is important to get the best MPG. Drivers who mainly use the car for long highway trips might see fuel economy closer to a standard hybrid, since the electric motor is used less.

How it compares

The 2018 Hyundai Sonata Plug-in Hybrid has several competitors. For example, the Toyota Prius Prime gets 54 MPG combined in hybrid mode, but its electric range is shorter. The Chevrolet Volt, another plug-in hybrid, has a longer electric range than the Sonata, but its older design might not appeal to everyone. Even the standard Hyundai Sonata Hybrid (non-plug-in) gets about 42 MPG combined, which is more affordable for those who don’t need all-electric driving. Buyers compare plug-in convenience, electric range, and fuel efficiency. Checking all Hyundai fuel economy data is often part of their research.

Tips to maximize efficiency

Keeping tires inflated is a simple way to improve fuel efficiency in any car, including the Sonata Plug-in Hybrid. Low tire pressure increases rolling resistance, making the engine (or electric motor) work harder and use more energy. Check your tire pressure often and inflate them to the recommended levels.

Pre-cooling or pre-heating the cabin while the car is plugged in can save energy, especially in hot or cold weather. By using grid power to adjust the temperature, you avoid using the battery’s range when you start driving. Use the car’s app or settings to schedule this.

Accelerating and braking gently can help mileage. Avoid quick starts and hard braking, which waste energy. Instead, accelerate smoothly and anticipate traffic to avoid sudden stops. The Sonata Plug-in Hybrid’s regenerative braking system reclaims energy when slowing down, so you can use it to your advantage.

Charge during off-peak electricity times. Many companies offer cheaper rates at night. Charge your Sonata Plug-in Hybrid overnight to save money. This is particularly helpful as SONATA MPG across all years shows plug-in efficiency is improving.

Understand the driving modes. Eco mode prioritizes fuel efficiency, Normal balances performance and economy, and Sport mode emphasizes power. Choose the right mode for the conditions. Eco mode is usually the most efficient in everyday situations.