24 MPG combined isn’t going to win any hypermiling contests, but it’s a reasonable compromise for the 2018 Infiniti Q50 AWD 2.0L. It’s not a Prius; it’s a stylish, comfortable, and engaging sport sedan with the added security of all-wheel drive. Buyers in this segment prioritize a blend of luxury, performance, and practicality, and fuel economy falls somewhere in the middle of that list. They value the peace of mind offered by AWD, even if it means using more gas compared to the rear-wheel-drive version or its less powerful rivals.

City and highway performance

The EPA estimates 22 MPG in the city and 28 MPG on the highway for this specific Q50 configuration. The city rating reflects the reality of stop-and-go traffic, where the 2.0L turbo engine requires more frequent bursts of power. The highway figure, on the other hand, represents a more relaxed and consistent driving scenario. The Q50’s 7-speed automatic transmission contributes to decent highway efficiency by allowing the engine to cruise at lower RPMs. However, drivers with a heavy foot will inevitably see those numbers decrease, particularly during aggressive acceleration on highway on-ramps. The all-wheel-drive system, while beneficial in inclement weather, also adds weight and complexity, resulting in a slight disadvantage compared to rear-wheel-drive models.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2018 Infiniti Q50 AWD 2.0L at $2,400 per year. This figure is based on driving 15,000 miles annually, 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 driving you do (city vs. highway), and the prevailing fuel prices in your region. Someone who primarily drives short distances in the city will likely exceed that $2,400 figure, while someone who mostly commutes on the highway could potentially spend less.

Real-world expectations

While the EPA provides a standardized benchmark, real-world fuel economy can differ substantially. Q50 owners report average fuel economy figures falling between 21 and 26 MPG combined. Variables like driving style, tire pressure, and even the use of accessories like air conditioning can all impact fuel consumption. And the quality of the gasoline used can also play a role. Using premium fuel, although not strictly required, might yield slightly better performance and potentially a small improvement in fuel economy. Ultimately, consistent and conservative driving habits are the most effective way to achieve or even exceed the EPA estimates.

How it compares

The 2018 Infiniti Q50 AWD 2.0L exists in a competitive segment. The Acura TLX 2.4L, for example, achieves a slightly better 27 MPG combined, but lacks the Q50’s sporty image and available torque. The BMW 320i xDrive, a direct competitor, manages 28 MPG combined with a similar engine configuration. The Mercedes-Benz C300 4MATIC lands at 26 MPG combined, offering a more luxurious interior but at a higher price point. For buyers prioritizing fuel economy above all else, these alternatives present viable options. However, for those who place greater value on the Q50’s unique styling and features along with the security of all-wheel drive, the fuel economy tradeoff is often deemed acceptable. Compare Q50 MPG across all years to see if this model year is best for your needs. Review all Infiniti fuel economy data for a wider range of options.

Tips to maximize efficiency

The Q50’s Drive Mode Selector allows you to choose between different settings, including “Eco” mode. When engaged, Eco mode adjusts throttle response and transmission shift points to prioritize fuel efficiency. While it might slightly reduce the car’s responsiveness, it can make a noticeable difference in fuel consumption, especially during city driving. Try using Eco mode during your daily commute and reserve other modes for more spirited driving.

Properly inflated tires are important for optimal fuel economy. Check your tire pressure regularly and maintain the recommended levels specified on the tire placard located on the driver’s side doorjamb. Underinflated tires increase rolling resistance, requiring the engine to work harder and burning more fuel. A quick check with a tire pressure gauge can save you money at the pump.

Aggressive driving habits, such as rapid acceleration and hard braking, significantly impact fuel economy. Smooth and gradual acceleration allows the engine to operate more efficiently. Anticipate traffic flow and avoid unnecessary braking. Maintaining a consistent speed on the highway also helps to conserve fuel.

Excess weight in your vehicle can reduce fuel economy. Remove any unnecessary items from the trunk and back seats. Carrying around extra weight forces the engine to work harder, resulting in increased fuel consumption. A lighter car is also a more efficient car.

Regular maintenance is essential for preserving fuel economy. Ensure that your Q50 receives timely oil changes, air filter replacements, and tune-ups. A well-maintained engine operates more efficiently and consumes less fuel. Adhering to the manufacturer’s recommended maintenance schedule is a worthwhile investment.