27 MPG combined is a perfectly acceptable number for the 2023 Hyundai Sonata with the 2.5L four-cylinder engine. It’s in line with expectations for a comfortable, spacious, and value-oriented mid-size sedan. This Sonata isn’t aimed at the hyper-miler crowd seeking ultimate efficiency; it targets families and commuters who prioritize a smooth ride, ample features, and a reasonable price tag over squeezing every last drop of fuel. Fuel economy is clearly important enough to research, but likely not the deciding factor for most Sonata 2.5L buyers.

City and highway performance

The EPA estimates 23 MPG in the city and 33 MPG on the highway for this specific Sonata configuration. The city figure reflects the demands of stop-and-go traffic, where the engine spends more time idling and accelerating. The 33 MPG highway rating is achievable thanks to the eight-speed automatic transmission (AM-S8), which allows the engine to cruise at lower RPMs at higher speeds. The many gears are also key to optimizing acceleration and fuel efficiency when you need to pass or merge. The Sonata’s relatively light weight for the class, around 3,300 pounds depending on trim, also contributes to better-than-average highway numbers.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2023 Hyundai Sonata 2.5L at exactly $1,600. This figure is calculated based on driving 15,000 miles per year, using a national average fuel price. Importantly, this is just an estimate. Your actual fuel costs will vary depending on your driving habits, the type of roads you typically drive on, and, of course, the ever-fluctuating price of gasoline. However, this standard figure allows for a useful baseline comparison when shopping for a new car.

Real-world expectations

While the EPA estimates provide a good starting point, real-world fuel economy can vary. The Sonata 2.5L generally delivers figures close to the EPA estimates, but aggressive driving, frequent short trips, and extreme weather conditions can all negatively impact fuel efficiency. Many owners report achieving highway MPG figures slightly above the EPA estimate when driving conservatively on long trips. So, while the $1,600 annual fuel cost is a guide, most drivers will likely fall within a range of a few hundred dollars above or below that figure.

How it compares

The mid-size sedan segment is competitive, and fuel economy plays a role in the purchase decision. The Toyota Camry achieves an EPA-estimated 28 MPG combined with its base 2.5L engine, giving it a slight edge over the Sonata. The Honda Accord with its 1.5L turbo engine is rated at 32 MPG combined. This comparison is essential for buyers who see fuel economy as a primary factor. The Nissan Altima with its 2.5L is rated at 32 MPG combined for the front-wheel-drive trims and 28 MPG combined for those with all-wheel drive. Buyers who live in areas with inclement weather need to weigh the benefit of all-wheel traction against the slight fuel economy penalty. Before buying any car, be sure to check our SONATA MPG across all years and all Hyundai fuel economy data.

Tips to maximize efficiency

Gentle acceleration is key to saving fuel in the Sonata 2.5L. Avoid “jackrabbit” starts from stoplights, and gradually increase your speed. Let the automatic transmission shift smoothly, and resist the urge to floor the accelerator unless absolutely necessary. The Sonata is not designed to be a sports car, so avoid pushing its engine to its limits if you are concerned about fuel consumption.

Proper tire inflation can significantly impact fuel economy. Check your tire pressure regularly and maintain the recommended pressure listed on the sticker inside the driver’s side doorjamb. Under-inflated tires create more rolling resistance, which reduces fuel efficiency. A simple tire gauge is an inexpensive tool that can save you money at the pump.

Reduce unnecessary weight in the vehicle. Remove any items from the trunk or back seat that you don’t need to carry regularly. Extra weight puts more strain on the engine, which translates to lower fuel economy. Travel light whenever possible, and only pack what you need for each trip.

Plan your trips strategically to avoid traffic congestion. Stop-and-go traffic dramatically reduces fuel economy, as the engine spends a significant amount of time idling. Use navigation apps to identify potential traffic delays and choose alternate routes or adjust your travel time to avoid peak congestion periods. Less time idling means less gas wasted.

Consider using the Sonata’s Eco mode, if equipped. This mode adjusts the engine and transmission mapping to prioritize fuel efficiency over performance. The throttle response will be less aggressive, and the transmission will shift earlier, resulting in improved MPG. While it might not be ideal for spirited driving, Eco mode is a useful tool for maximizing fuel economy during daily commutes and long highway trips.