20 MPG combined is what buyers of the 2017 Infiniti QX50 AWD with the 3.7L V6 can expect. This isn’t about achieving Prius-like efficiency. It’s about accepting a trade-off, a thirstier engine in exchange for the creamy smooth power delivery and confident all-wheel drive that defines the QX50’s driving experience. This vehicle appeals to someone who prioritizes a responsive engine and sure-footed handling over squeezing an extra mile or two from every gallon.

City and highway performance

The EPA estimates the 2017 QX50 AWD at 17 MPG in the city and 24 MPG on the highway. This split reflects the VQ37VHR engine’s nature. It likes to rev, and in stop-and-go city driving, that translates to more fuel consumption. The highway figure, while still not class-leading, is more respectable and achievable, especially on longer road trips where the engine can settle into a more efficient cruising rhythm.

The 7-speed automatic transmission, while relatively modern for its time, doesn’t offer the same fuel-saving benefits as the 8-speed or even 9-speed units found in some newer competitors. Its priority is smooth, quick shifts rather than maximum efficiency.

Annual fuel cost

The EPA pegs the annual fuel cost for the 2017 Infiniti QX50 AWD at $2,625. This figure is based on driving 15,000 miles per year and using national average fuel prices. It’s a standardized metric designed to allow you to compare fuel expenses across vehicles. Remember that your actual fuel expenditure will vary depending on your driving habits, fuel prices in your area, and the type of driving you do most often. Someone primarily doing highway miles might see a lower annual cost, while a city dweller could easily exceed that $2,625 figure.

Real-world expectations

While the EPA estimates are a useful starting point, many owners find that their real-world fuel economy falls slightly below those numbers. Expect to see around 15-18 MPG in typical city driving and perhaps 22-24 MPG on the highway, especially if you have a heavy foot or live in an area with hilly terrain. The QX50’s all-wheel drive system, while a benefit in inclement weather, also contributes to slightly lower fuel economy than a comparable rear-wheel drive vehicle. Wind resistance and tire rolling can add to the fuel consumption. Also, aggressive acceleration will dramatically decrease your average MPG reading.

How it compares

The 2017 QX50 doesn’t fare particularly well against its competitors in terms of fuel economy. A similarly equipped 2017 Acura RDX with all-wheel drive manages around 22 MPG combined. Even the Volvo XC60 T5 AWD, known for its blend of luxury and efficiency, achieves around 23 MPG combined. The BMW X3 xDrive28i from the same year reaches approximately 24 MPG combined, offering both comparable performance and better fuel efficiency. These numbers highlight a clear disadvantage for the QX50, driven largely by its older engine design and less advanced transmission. The QX50 driver is prepared to accept these lower numbers for the character of its punchy V6. For details across the model range, consult the QX50 MPG across all years.

Tips to maximize efficiency

Avoid aggressive acceleration. The QX50’s V6 engine is eager to rev, but each burst of acceleration burns extra fuel. Instead, try to accelerate smoothly and gradually to maintain optimal fuel efficiency. Develop a light touch on the accelerator. Don’t forget you can browse all Infiniti fuel economy data to compare other models.

Maintain proper tire inflation. Underinflated tires increase rolling resistance, forcing the engine to work harder and consume more fuel. Check your tire pressure regularly (ideally every two weeks) and inflate them to the pressure recommended on the sticker inside the driver’s side door. This simple maintenance task can have a noticeable impact on your MPG.

Minimize idling. Idling burns fuel without moving the car. If you anticipate being stopped for more than 30 seconds, turn off the engine. The QX50 doesn’t have an automatic stop/start system, so you’ll need to manually shut it off. Your MPG reading will benefit.

Plan your routes strategically. Avoid congested areas and routes with frequent stoplights. Opt for highways and roads with consistent speed limits whenever possible. Using a GPS navigation system to find the most efficient route or to avoid traffic can save gas.

Use cruise control on the highway. Cruise control helps maintain a consistent speed, reducing unnecessary acceleration and deceleration. This can improve fuel efficiency on longer highway drives. But be wary about cruise control in hilly areas, the vehicle can downshift aggressively to maintain speed, canceling any benefits.