The 2015 Kia Optima Hybrid gets 37 MPG combined, a respectable figure that makes it a contender for mid-size sedan buyers focused on fuel efficiency. It’s not class-leading, but it balances efficiency and a conventional sedan driving experience for drivers who aren’t ready for the styling or driving quirks of dedicated hybrids or plug-in models.

City and highway performance

The EPA estimates of 35 MPG city and 38 MPG highway for the 2015 Optima Hybrid reflect its powertrain design. Unlike some hybrids that rely heavily on electric power in city driving, the Optima Hybrid mixes gasoline and electric power more evenly across the speed range. The 2.4L 4-cylinder engine is tuned for efficiency, and the electric motor provides a consistent boost without being overly aggressive. The six-speed automatic transmission (AM6) also helps with efficiency, providing smoother shifts, a wider gear ratio spread and optimized power delivery compared to CVTs commonly found in other hybrids.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2015 Kia Optima Hybrid is $1,200. This figure is based on driving 15,000 miles per year and using the national average fuel price when the car was originally tested. It’s a useful benchmark for comparing the running costs of different vehicles, though your actual fuel expenses will vary depending on your driving habits, local fuel prices, and the grades of gasoline you purchase. However, the $1,200 figure is calculated from the EPA combined average fuel efficiency of 37 MPG.

Real-world expectations

While the EPA estimates provide a standardized baseline, real-world fuel economy often differs. Drivers of the 2015 Optima Hybrid frequently report figures that are close to the EPA estimates, but results will vary. Factors like driving style, traffic conditions, and even tire pressure can influence fuel economy. For instance, aggressive acceleration and frequent hard braking will negatively impact your MPG, something true of all hybrids.

The 2015 Optima Hybrid has been commended for delivering consistent fuel efficiency in diverse driving conditions.

How it compares

The 2015 Optima Hybrid’s 37 MPG combined rating is relevant when cross-shopping other mid-size hybrid sedans. The 2015 Toyota Camry Hybrid is rated nearly the same with 40 MPG combined. The Ford Fusion Hybrid achieved a combined rating of 42 MPG, according to the EPA, but the real-world difference will depend on the driver.

These comparisons matter because the Optima Hybrid buyer is prioritizing two things: fuel economy, of course, and the conventional driving experience of a mid-size sedan. They are not seeking the absolute highest MPG figures at any cost, but rather a smooth balance of efficiency, comfort, and familiar controls. While you’re here, take a look at all Kia fuel economy data. Or, compare OPTIMA MPG across all years.

Tips to maximize efficiency

Gentle acceleration will make the most of the electric motor’s torque, reducing the demand on the gasoline engine, especially when accelerating from a stop. Watch the energy flow display, if equipped, and strive to keep the car in electric-only mode as often as possible at low speeds and during light acceleration.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, which forces the engine to work harder, thus decreasing fuel economy. Check your tire pressure regularly and adhere to the recommended pressures listed on the driver’s side door jamb. Also, make sure that you are using low-rolling-resistance tires that came originally with the Optima Hybrid.

Minimize your use of air conditioning. Air conditioning places a significant draw on the engine, negatively impacting fuel economy. When possible, use the ventilation system or roll down the windows, especially at lower speeds. At higher speeds, the aerodynamic drag of open windows can actually reduce fuel economy, making air conditioning the better choice.

Plan your routes to avoid stop-and-go traffic. Consistent cruising speeds contribute to better fuel economy because the engine spends less time accelerating and decelerating. Using cruise control on highways can also help maintain a steady speed and improve efficiency.

Reduce unnecessary weight. Removing excess items from your car reduces the amount of effort required to accelerate and maintain speed. Every extra pound decreases fuel economy. Also, keep the trunk clean.