25 MPG combined isn’t going to win any hypermiling competitions, but it’s an acceptable compromise for the 2018 Infiniti Q50 2.0L. This isn’t a Prius competitor; it’s a stylish, somewhat sporty, entry-level luxury sedan, and its fuel consumption reflects its market position. The Q50 2.0L appeals to buyers who value the Infiniti badge, the car’s sharp design, and a touch of driving excitement, and they’re willing to trade ultimate fuel efficiency to get it.

City and highway performance

The EPA estimates for the 2018 Q50 2.0L are 23 MPG in the city and 30 MPG on the highway. This split reflects the engine’s tuning and the seven-speed automatic transmission’s programming. Around town, the engine works harder dealing with stop-and-go traffic. On the highway, the transmission settles into its higher gears, allowing the engine to cruise at lower RPMs and consume less fuel. The 30 MPG highway figure is respectable for this class of vehicle, suggesting the Q50 2.0L is a comfortable and reasonably efficient long-distance cruiser.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Infiniti Q50 2.0L at $2,300. This figure is based on driving 15,000 miles per year and using national average fuel prices.

Keep in mind that this is just an estimate. Your actual fuel costs will vary depending on your driving habits, the type of fuel you use, and local fuel prices. Aggressive driving, frequent short trips, and using premium fuel (though not required) will all increase your fuel expenses beyond this projected $2,300.

Real-world expectations

While the EPA estimates provide a baseline, real-world fuel economy can vary. Expect to see figures slightly below the EPA estimates if you primarily drive in the city or have a heavy foot. But if you do a lot of highway driving at consistent speeds, you might see numbers that meet or even slightly exceed the 30 MPG highway rating. Factors like traffic conditions, weather, and even tire pressure can all play a role.

How it compares

Compared to its competitors, the 2018 Infiniti Q50 2.0L is in the middle regarding fuel economy. The Lexus IS 300 RWD, for example, manages a slightly better 24 MPG combined, but it needs 91 octane fuel. The BMW 320i, a direct competitor when new, offers a similar 28 MPG combined. The Acura TLX 2.4L, with its naturally aspirated four-cylinder, is rated at 27 MPG combined.

These differences, while seemingly small, translate to real-world savings (or expenses) over the life of the vehicle. For the Q50 buyer, the Infiniti’s styling and driving dynamics often outweigh these slight fuel economy variations; the car is chosen for personality and design, not just pure efficiency. Check out all Infiniti fuel economy data to see how other models stack up, or examine Q50 MPG across all years to determine which year is right for you.

Tips to maximize efficiency

The 2018 Q50 2.0L’s turbocharged engine responds well to smooth driving inputs. Avoid sudden acceleration and hard braking, as these actions significantly reduce fuel economy. Anticipate traffic flow and maintain a steady speed whenever possible. The seven-speed automatic transmission is programmed to shift efficiently; let it do its job.

Ensure your tires are properly inflated. Low tire pressure increases rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly and inflate them to the recommended levels, which can be found on the sticker located on the driver’s side door jamb.

Reduce unnecessary weight in the vehicle. Carrying extra cargo increases the load on the engine and decreases fuel economy. Remove any items you don’t need, such as golf clubs, sports equipment, or heavy tools. A lighter vehicle is a more efficient vehicle.

Use cruise control on the highway. Maintaining a consistent speed minimizes throttle fluctuations and optimizes fuel consumption. The Q50’s cruise control system is easy to use and can help you achieve better highway MPG. Avoid using cruise control in hilly terrain, as the system may aggressively downshift to maintain speed, reducing fuel-saving benefits.