The 2017 Infiniti QX80 2WD with the 5.6L V8 gets 16 MPG combined. This SUV isn’t about pinching pennies; the QX80 caters to a specific buyer who prioritizes copious interior space, strong towing capability, and a commanding presence over outright fuel efficiency. This buyer often includes large families needing three rows, or those who regularly haul boats, trailers, or other heavy gear. For them, the trade-off is acceptable, even expected and they understand the inherent thirst of a powerful V8 propelling a vehicle of this size.

City and highway performance

The EPA-certified fuel economy figures of 14 MPG city and 20 MPG highway give a reasonable picture of what to expect. The city number reflects the QX80’s weight and engine size in stop-and-go conditions, with idling and frequent acceleration draining the fuel tank quickly. On the open road, 20 MPG is somewhat more palatable, although still well below other premium SUVs. The seven-speed automatic transmission does its best to optimize fuel consumption at cruising speeds, but ultimately, physics prevails. The QX80’s considerable mass and aerodynamic profile demand power, and power comes at a price.

Annual fuel cost

The EPA estimates the annual fuel cost for the 2017 Infiniti QX80 2WD at $3,600. This figure is based on driving 15,000 miles per year, using a blend of city and highway driving, and assuming national average fuel prices. Of course, individual driving habits and fluctuating fuel costs can significantly alter this number. Aggressive driving, frequent towing, or simply living in an area with higher gas prices will all inflate the annual expenditure. Using premium fuel, which is recommended for optimal performance, will further increase the total cost of ownership. This $3,600 expenditure should be treated as a baseline; consider individual lifestyle factors to get a more realistic estimation.

Real-world expectations

EPA estimates provide a standardized benchmark, but real-world fuel economy often deviates. Drivers reporting their own QX80 MPG across all years frequently see figures slightly below the official numbers, particularly in mixed driving conditions. Factors like traffic congestion, climate control usage, and even tire pressure play a role. Those living in hilly areas will likely experience lower MPG than those on flat terrain. Consistency and anticipation are key to getting close to the EPA estimates.

How it compares

The QX80’s fuel economy lags behind many of its rivals. The Cadillac Escalade, for instance, achieves 15 MPG city and 22 MPG highway in its 2WD guise, giving it a slight edge. The Lincoln Navigator, with its turbocharged engine, sees similar figures, sometimes even exceeding the Escalade thanks to its lighter overall weight. Even the less luxurious, but still spacious, Chevrolet Tahoe manages a combined fuel economy rating near the QX80.

This comparison matters because buyers in this segment, even if not solely focused on fuel economy, still want to ensure they’re not needlessly burning cash. They look at all Infiniti fuel economy data and might cross-shop accordingly, potentially accepting slightly less space or towing capacity if the fuel savings are substantial.

Tips to maximize efficiency

Gentle acceleration and consistent speed are the main drivers of fuel economy no matter what the car. Avoid abrupt starts and stops, and maintain a steady foot on the accelerator, especially on the highway. Allowing the QX80’s considerable momentum to carry you as much as possible will reduce the need for constant acceleration and improve mileage.

Tire pressure has a direct and impactful influence on fuel efficiency. Ensure your tires are inflated to the manufacturer’s recommended pressure. Underinflated tires create more rolling resistance, forcing the engine to work harder and consume more fuel. Check tire pressure regularly, particularly during temperature fluctuations, as this can impact pressure levels.

Limit the amount of weight you carry in the QX80. Unnecessary cargo adds extra strain on the engine. Removing items you don’t regularly need can incrementally improve fuel economy, especially during city driving. Empty those forgotten equipment bags!

Plan your trips carefully to find the most efficient route. Avoiding peak traffic hours and known areas of congestion minimizes idling and stop-and-go conditions, where the QX80’s fuel consumption is at its worst. A few minutes of planning can translate into noticeable fuel savings over time.

Service your vehicle regularly, especially keeping spark plugs, air filter, and oxygen sensors clean. A well-maintained engine operates more efficiently, ensuring optimal fuel combustion. Clean those parts and make sure there is nothing blocking your engine function.