26 MPG combined is a respectable number for the 2021 Infiniti QX50 2.0L 4-cyl, making it a competitive choice for buyers seeking a blend of luxury and reasonable efficiency in a compact crossover. This isn’t a hybrid aiming for Prius-level numbers, nor is it a performance SUV guzzling fuel for maximum horsepower. The QX50 is designed for affluent suburbanites and young professionals who value style, comfort, and technology, and also keep an eye on running costs.

City and highway performance

The EPA estimates 23 MPG in the city and 29 MPG on the highway for the 2021 Infiniti QX50 with its innovative 2.0L variable compression turbo engine. The city figure reflects the stop-and-go nature of urban driving, where the engine’s efficiency-focused programming comes into play. Expect slightly lower figures if you live in an area with frequent hills or aggressive driving. The highway number, however, is more indicative of relaxed cruising, where the QX50’s aerodynamic design and efficient transmission allow it to stretch a gallon of fuel further. The automatic (AV-S8) transmission plays a crucial role here, offering smooth shifts and optimized gear ratios to keep the engine in its most efficient range.

Buyers are drawn to the QX50 for its upscale image and comfortable ride, fuel economy plays a supporting role, not the leading one.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2021 Infiniti QX50 2.0L 4-cyl to be $2,250. This figure is calculated based on driving 15,000 miles per year, with 45% of those miles driven in the city and 55% on the highway, using national average fuel prices. It’s a valuable benchmark, but remember that your actual fuel costs may vary significantly, depending on your driving habits, local fuel prices, and the type of fuel you use. If you drive fewer miles or live in an area with lower fuel costs, you’ll naturally spend less, and frequent hard acceleration or primarily city driving will increase that annual figure.

The $2,250 estimate provides a standardized point of comparison that potential buyers can use to compare the Infiniti to other cars in its category.

Real-world expectations

While the EPA estimates offer a baseline, real-world fuel economy often differs. Some drivers achieve figures close to the EPA’s estimates with careful driving, but aggressive acceleration and frequent short trips can easily drop the MPG below 23. The variable compression engine is sensitive to driving style, smooth and consistent throttle inputs will yield better results than frequent bursts of power. Consider tracking your fuel consumption for the first few months of ownership to establish a realistic baseline for your specific driving patterns. Online forums, such as those dedicated to the QX50 MPG across all years, are a good resource for comparing notes with other owners and gauging what they’re experiencing in similar conditions.

How it compares

The QX50’s fuel economy stacks up reasonably well against its competitors, but it doesn’t necessarily lead the pack. For example, the Acura RDX gets an EPA-estimated 22 MPG city, 28 MPG highway, and 24 MPG combined. The Lexus NX 300 manages around 22 MPG combined, while the BMW X3 sDrive30i achieves 25 MPG combined. The Lincoln Corsair, another key rival, comes in around 25 MPG combined for its base engine. The QX50’s slight edge over some competitors probably isn’t the deciding factor for most buyers, as they prioritize factors like interior design, technology features, and brand reputation. It’s more of a tiebreaker for those already considering the Infiniti.

For a look at all Infiniti fuel economy data, you find other models with similar fuel economy depending on trim.

Tips to maximize efficiency

Gentle acceleration is key to maximizing fuel economy in the QX50. The variable compression engine is designed to optimize efficiency under lighter loads, so avoid unnecessary hard acceleration and maintain a steady pace whenever possible. Anticipate traffic flow and use gradual braking to conserve momentum, this allows the engine to remain in its most efficient mode for longer periods.

Check your tire pressure regularly. Underinflated tires increase rolling resistance, which directly impacts fuel consumption. Consult the sticker on the driver’s side doorjamb for the recommended tire pressure and ensure your tires are properly inflated, checking at least once a month.

Reduce unnecessary weight. Carrying excessive cargo in your QX50 reduces fuel economy by forcing the engine to work harder. Remove any items you don’t need, such as golf clubs or extra luggage, to lighten the load and improve efficiency.

Use cruise control on the highway. Cruise control helps maintain a consistent speed, preventing unnecessary acceleration and deceleration. This is especially effective on long highway drives where traffic is light and predictable, resulting in better fuel economy.

Consider using the QX50’s selectable drive modes, if equipped. Some trims offer an “Eco” mode that optimizes engine and transmission settings for maximum fuel efficiency. While it might slightly reduce responsiveness, it can make a noticeable difference on longer trips, especially when combined with other fuel-saving techniques.